solve the equation

4c = 3

c=

Answer:

[tex]x - 5y =12[/tex]  and [tex]3x + 2y =-15[/tex]

Step-by-step explanation:

Given

See attachment

Required

Which options has the solution: [tex](x,y) = (-3,-3)[/tex]

[tex](a)[/tex]  [tex]x - 5y =-12[/tex]  and [tex]3x + 2y =-15[/tex]

Substitute [tex]x =-3[/tex] and [tex]y = -3[/tex]  in [tex]x - 5y =-12[/tex]  and [tex]3x + 2y =-15[/tex]

[tex]x - 5y =-12[/tex]

[tex]-3 - 5*-3 = -12[/tex]

[tex]-3 + 15 = -12[/tex]

[tex]12 \ne -12[/tex]

This is not a solution

[tex](b)[/tex]  [tex]x - 5y =-12[/tex]  and [tex]3x + 2y =15[/tex]

As shown in (a), (-3,-3) is not true for [tex]x - 5y =-12[/tex]

[tex](c)[/tex]  [tex]x - 5y =12[/tex]  and [tex]3x + 2y =-15[/tex]

Substitute [tex]x =-3[/tex] and [tex]y = -3[/tex]  in [tex]x - 5y =12[/tex]  and [tex]3x + 2y =-15[/tex]

[tex]x - 5y =12[/tex]

[tex]-3 - 5(-3) = 12[/tex]

[tex]-3 + 15 = 12[/tex]

[tex]12 = 12[/tex]

[tex]3x + 2y =-15[/tex]

[tex]3(-3) + 2(-3) = -15[/tex]

[tex]-9 - 6 = -15[/tex]

[tex]-15 = -15[/tex]

Hence,

(-3,-3) is true for [tex]x - 5y =12[/tex]  and [tex]3x + 2y =-15[/tex]

Answer:

C

Step-by-step explanation:

I took the quiz

Answer:

5.66

Step-by-step explanation:

Kelli cut away 3.34 meters of rope before that she had 9 meters of rope how much rope does Kelko has

9 − 3.34

= 5.66

Answer:

19/2 or 9.5 or 9 1/2

Step-by-step explanation:

These are equal to 1 17/2

Answer:

4 1/2 pt = 9 c

Step-by-step explanation:

Answer:

8 cups

Step-by-step explanation:

Answer:

the answer is d

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

4+10=14

Answer:

14

Step-by-step explanation:

4+c

4+(10)=14

Answer:

16

Step-by-step explanation:

448/28=16

if she did the work sheet for 28 days she answered 16 questions per day .

Answer:

it is 16

Step-by-step explanation:

448 ÷ 28 = 16 or 16×28=448

Answer:

Well if no variable substitution is given its 10+q

10+q=10+q

Answer:

10+q is thank you :P

Step-by-step explanation:

hehe

Answer:

give me brainliest

Step-by-step explanation:

51 divided by 60 times 100 = 85%

Answer:

85%

Step-by-step explanation:

51/60*100 = 85%

Answer:

66.9375

Step-by-step explanation:

from what you told me 4cm=21km

if you divide 21 by four, you get how many km is one cm. which is 5.25km

15 divided by 4 = 3.75

what we know is that 4 can go into 15 three whole times. so.. 21x3=63

now what we need to figure out is that .75

so, 75 is three quarters, so i divided 5.25 divided by 4 to get how much one quarter of a cm is in km. then i multipled that by three, giving me: 3.9375

63+3.9375= 66.9375

but you might have to round this i dont know if you do or not so thats the answer im giving

[tex]\text {Hello! Let's Solve this Problem!}[/tex]

[tex]\text {\underline {The First Step is to Simplify}}[/tex]

[tex]\text {2*x=2x}\\\text {2*5=10}\\\text {1/2*x=1/2x}\\\text {1/2*-4=-2}[/tex]

[tex]\text {Your New Problem Is: 2x+10=1/2x-2}[/tex]

[tex]\text {\underline {The Next Step is to Subtract 1/2x}}[/tex]

[tex]\text {2x+10-1/2x=1/2x-2-1/2x}[/tex]

[tex]\text {Your New Problem Is: 3/2x+10=-2}[/tex]

[tex]\text {\underline {The Next Step is to Subtract 10}}[/tex]

[tex]\text {3/2x+10-10=-2-10}[/tex]

[tex]\text {Your Final Problem Is: 3/2x-12}[/tex]

[tex]\text {\underline {The Final Step is to Multiply 2/3}}[/tex]

[tex]\text {2/3*3/2x=2/3*-12}[/tex]

[tex]\text {Your Answer Would Be:}[/tex]

[tex]\Huge\boxed {x=-8}[/tex]

[tex]\text {Best of Luck!}[/tex]

[tex] \huge\bf \underline{Solution:-}[/tex]

[tex]2(x + 5) = \frac{1}{2} (x - 4)[/tex]

[tex]⇒2x + 10 = \frac{x}{2} - \frac{4}{2} [/tex]

[tex]⇒2x - \frac{x}{2} = - \frac{4}{2} - 10[/tex]

[tex]⇒ \frac{4x - x}{2} = - 2 - 10[/tex]

[tex]⇒ \frac{3x}{2} = - 12[/tex]

[tex]⇒3x = - 24[/tex]

[tex]⇒x = - \frac{ 24}{3} [/tex]

[tex]⇒x = - 8[/tex]

[tex] \\ [/tex]

[tex] \sf \underline{Now, \: we \: are \: gonna \: do \: correction \: test :-} [/tex]

[tex]L.H.S. = 2 (x + 5) [/tex]

[tex] \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 2( - 8 + 5)[/tex]

[tex] \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 2 \times ( - 3)[/tex]

[tex] \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = - 6[/tex]

[tex]R.H.S = \frac{1}{2} (x - 4)[/tex]

[tex] \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{1}{2} ( - 8 - 4)[/tex]

[tex] \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{1}{2} \times ( - 12)[/tex]

[tex] \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = - 6[/tex]

[tex] \bold{ \therefore{L.H.S = R.H.S}}[/tex]

[tex] \sf \red{Hence, \: the \: value \: of \: x \: is \: - 8. }[/tex]

Answer:

I can only help with a, witch is -3x

Step-by-step explanation:

im sorry i cant help with b, that one i cant even figure out, and im usually pretty good with math

i hope i helped you out a little bit at least

Answer:

1/2 is a fraction and 1 1/2 is a whole number

Answer:

Step-by-step explanation:

Y+6=2x-6

6+6=2x-y

12=2x-y

Answer:

Step-by-step explanation:

the volume of the cone:

V=3.14*r^2*(h/3)

V=3.14*8*8*(20/3)=200.96*(20/3)=1339.73

Answer:

Step-by-step explanation:

volume of cone =1/3 πr²h=1/3×π×8²×20=1280/3 π mm³

=1280/3×3.14

≈1339.73 mm³

Step-by-step explanation:

the answer C

hope this helps bro

and if u need work shown lemme know

The solution of the inequality is h > 2.

The graph of the solution is attached below.

The given inequality is,

                          5 + h > 7

Add and subtract 5 on both side of the equation.

                      5 + h - 5 > 7 - 5

                                h > 2.

The graph of the solution is attached below.

Hence, the solution of the inequality is h > 2.

Learn more about the inequality here:

https://brainly.com/question/24372553

The solution to the inequality 5 + h > 7 is h > 2. Graphing the solution involves representing the range of values for h that satisfy the inequality.

Here's a step-by-step explanation:

In summary, the solution to the inequality 5 + h > 7 is h > 2. Graphing the solution involves marking an open circle at 2 on a number line and shading the region to the right, indicating all values greater than 2.

Learn more about inequalities here:

https://brainly.com/question/26855203

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Answer:

491 ft²

Step-by-step explanation:

We know the area of a sector, A = Ф/360° × πr² where Ф = angle subtended by sector = angle of rotation of sprinkler = 90° and r = radius of sector = length of spray = 25 feet.

Substituting the values of the variables into the equation, we have

A = Ф/360° × πr²

A = 90°/360° × π(25 ft)²

A = 1/4 × 625π ft²

A = 1/4 × 1963.5 ft²

A = 490.9 ft²

A ≅ 491 ft² to the nearest square foot

Answer:

(0, 0), (-3, -1), (-6, -2), and (6, 2)

Step-by-step explanation: just go along the points that intersect in that line that you created UwU (the line should go through the origin (0, 0). get it now?)

Answer:

y=-4

x=-3

Step-by-step explanation:

6x+2y=-26 (equation 1)

-6x+36y=-126 (equation 2)

38y=-152

Both side divide by 38

[tex]\frac{38}{38}[/tex]y=[tex]\frac{-152}{38}[/tex]

y=-4

substitution y=-4  in(equation 1)

6x-8=-26

6x=-18

x=-3

substitution y=-4  in(equation 2)

x+24=21

x=-3

The above question is incomplete.

Complete Question

Eliza reads of 1/7 of her book on Monday. On Tuesday and Wednesday combined, she reads three times as much as she reads on Monday. The expression 1/7r +3(1/7r) can be used to determine the number of pages Eliza reads on Monday, Tuesday, and Wednesday combined. The variable r represents the total number of pages in the book.

Eliza's book has a total of 357 pages. How many pages does Eliza read on Monday, Tuesday, and Wednesday combined?

Answer:

204 pages

Step-by-step explanation:

From the above question, we have the variable:

The expression 1/7r +3(1/7r) can be used to determine the number of pages Eliza reads on Monday, Tuesday, and Wednesday combined.

Hence:

r = 357 pages

Hence:

1/7r +3(1/7r)

1/7 × 357 + 3(1/7 × 357)

= 51 + 3(51)

= 51 + 153

= 204 pages

Therefore, the number of pages that Eliza read on Monday, Tuesday, and Wednesday combined is 204 pages

Answer:

204

Step-by-step explanation:

Answer:

Step-by-step explanation:

so 8^2 +10x+3 (if you times 8*3 -gives you 24)

the middle number is 10X right so then you have to guess two numbers that either add up or take away to make it a positive 10.

so example if i try 5+5 it gives me 10 but it i multiply 5 by 5 -it gives 25 therefore lets try another pair of numbers.

i chose 6 and 4 because when i add them it gives me 10 and when i multiply them, it gives me 24.

therefore im just going to:

8x^2+6x+4x+3

to factorise im going to use 2x

2x(4x+3) + 1(4x+3)

so my answer is (2x+1) and (4x+3)

Answer:

The new coordinates are:

Please check the attached graph.

Step-by-step explanation:

We know that when an object is dilated by a scale factor, it gets reduced, stretched, or remains the same, depending upon the value of the scale factor.

If the scale factor > 1, the image is enlarged

If the scale factor is between 0 and 1, it gets shrunk

If the scale factor = 1, the object and the image are congruent

Given the vertices of the triangle in the diagram

A (1, 4)

B(2, 2)

C(-2, 1)

In our case:

Rule to calculate the dilation by a scale factor 6 centered at the origin

P(x, y) → P'(6x, 6y)

Here, P'(6x, 6y) ) is the image of P(x, y).

Thus,

A (1, 4)  → A'(6(1), 6(4))  → A'(6, 24)

B(2, 2)  → B'(6(2), 6(2))  → B'(12, 12)

C(-2, 1) → C'(6(-2), 6(1))  → C'(-12, 6)

Therefore, the new coordinates are:

Please check the attached graph.

Answer:

C and D

Step-by-step explanation:

Answer:

[tex]\sqrt{549}[/tex] ≈ 23.4

Step-by-step explanation:

A = bh

270 = 15b

b = 18

Now you know the two legs, use the Pythagorean Theorem to find the value of the hypotenuse:  a² + b² = c²

15² + 18² = c²

225 + 324 = c²

c² = 549

c = √549

Answer: 120

Step-by-step explanation: divide 24 by 5 to get 4.8 so its 4.8 minutes for one question

25 x 4.8 = 120

Answer:

6 horses

Step-by-step explanation:

2(x + y) ≤ 240

side lengths with greatest area = x = 120/2 and y = 120/2

60 × 60 = 3600ft²

3600/600 = 6 horses

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The required maximum number of horses is 7.

Given that,
Madison purchased 240 ft of fencing to build a corral for her horses. If each horse requires 600 ft2 of space, what is the maximum number of horses Madison can put in the corral she builds with the fencing is to be determined.

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication and division,

Here,
Madison has 240 ft of fencing,
Circumference of  corral = 240 ft
2πr = 240
r = 38.2
Now the area of the circular corral,
= πr²
= 4584.33

Now, the number of horses,
= total area of corral/area for each horse
= 4584.33 / 600
= 7.64
≈ 7

Thus, the required maximum number of horses is 7.

Learn more about arithmetic here:

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Answer: im pretty sure its ”A” im not 100% sure though..

Step-by-step explanation:

Answer:

a summary is an average and an average is mean

Step-by-step explanation:

to get the mean add all the cakes sold together then divide by number of years

21+28+19+26+21=115

115/5=23

so....

first one: mean

second one: 23

Answer: mean which has a value of 23

Step-by-step explanation: