Mathematics High School

solve for x? please help​

Solve For X? Please Help

Answers

Answer 1

Answer:

x = [tex]\sqrt{10}[/tex]

Step-by-step explanation:

The 2 right triangles and the outer right triangle are similar, then ratios of corresponding sides are equal, that is

[tex]\frac{x}{5}[/tex] = [tex]\frac{2}{x}[/tex] ( cross- multiply )

x² = 10 ( take the square root of both sides )

x = [tex]\sqrt{10}[/tex]

Answer 2

Answer:

√10

Step-by-step explanation:

taking the smallest triangle;

y as the hypotenuse, x as the adjacent side, 2 as the opposite side

then: y²=x²+2²

x²=y²-2²= y²-4

taking the other triangle;

z as the hypotenuse, x as the adjacent side, 5 as the opposite side

then: z²=x²+5²

x²=z²-5² = z²-25

take both equations,

x²= y²-4

x²= z²-25

y²-4= z²-25

y²= z²-25+4 = z²-21

taking the biggest triangle (whole triangle);

(5+2)= 7 as the hypotenuse, z as the adjacent side, y as the opposite side

then; 7²=z²+y²

z²+y²=7² =49

but y²= z²-21;

z²+y² =49

z²+ z²-21 =49

2z²-21=49

2z²=49+21= 70

z²= 70/2 = 35

take x²= z²-25

x²= 35-25 = 10

[tex]x = \sqrt{10} [/tex]

Related Questions

Questionnnnnnnnnnnn :

Answers

Answer:

where!!

where's the question!!

The area of a rectangular trampoline is 135 ft. The length of the trampoline is 6 ft
greater than the width of the trampoline. This situation can be represented by the
equation w2 +6w
135 = 0.
What is the width of the trampoline, in feet?
5 feet
15 feet
6 feet
9 feet

Answers

The width of the given trampoline is 9 feet, and which area is 135 square feet.

What is the area of the rectangle?

The area of a rectangle is defined as the product of the length and width.

The equation w² +6w -135 = 0 can be factored as (w+15)(w-9) = 0.

Therefore, the solutions for w are w = -15 or w=9.

Since the width of the trampoline cannot be negative, we can conclude that the width of the trampoline is 9 feet.

To confirm this, we can calculate the length of the trampoline using the given information that the length is 6 feet greater than the width:

length = width + 6 = 9 + 6 = 15 feet

Then we can verify that the area is indeed 135 ft²:

area = length x width = 15 x 9 = 135 ft²

Therefore, the width of the trampoline is 9 feet.

Learn more about the Area of the rectangle here:

brainly.com/question/20693059

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Find the slope and y-intercept of the line in each graph.

Answers

Slope of question on the left is 5/2 and the intercept is 3
On the right

Slope is negative 2/3 and the intercept is 2

Answer:

1. slope = 2; y-intercept = 3

2. slope = [tex]\frac{-2}{3}[/tex]; y-intercept = 2

let me know if you need the math


The cost of admission to a popular music concert for 4 children and an adult was
$54. The admission for 8 children and 3 adults in another music concert was $122.
How much was the admission for each child and adult?

Answers

Answer:

Child = $ 10.00

Adult = $ 14.00

Step-by-step explanation:

for 1 adult ticket it is $14 and for one child ticket it is $10. hope this helps!

Find each angle measure

Answers

Step-by-step explanation:

m<AEC= 180-152= 28°

m<CEB= 180-28=152°

m<FEC= 90+28=118°

WILL GIVE BRANLIEST
Which number line shows the solution to11x + 14 < –8?

Answers

Answer: i think its D because X < -2 hopefully i helped

Step-by-step explanation:

Which of these two triangles appear to be similar

Answers

Answer:

Triangle I and II

Step-by-step explanation:

Hope my solution helps you and don't forget to help me with my maths questions....Check my questions..

Answer:

I and II

Step-by-step explanation:

the first one because the one on the far left is just smaller than the one in the middle

The first transformation for this composition is [________], and the second transformation is a translation down and to the right. a 90° rotation about point L a 270° rotation about point L a 90° rotation about point P a 270° rotation about point P

Answers

Answer:

D. A 270-degree rotation about point P

Step-by-step explanation:

I hope this helps!!!

1. Evaluate each algebraic expression.
c. 3b - 5
for b = -2
for b = 3
for b = 9

I need the answer

Answers

Answer:

-11, 4, and 22

Step-by-step explanation:

Expression: 3b-5

when b=-2

Expression: 3(-2)-5=-11

When b=3

Expre; 3(3)-5=4

When b=9

Expre; 3(9)-5=22

Evaluate the expression for b = 22.

–3b =

Answers

Answer:

-66

Step-by-step explanation:

-3b=-3×22=-66

...........

-66 < answer
-3 • 22 = -66 < how I did it
Yolo

which is greater -1/4 or -1/2

Answers

Answer:

-1/4 > -1/2

Step-by-step explanation:

-1/2 = -2/4

and -1/4 is greater than -2/4

An Italian restaurant buys 15 pounds of onions every 2 weeks. how many bags of onions will the restaurant buy in 7 weeks?

Answers

Since it is 7 weeks and they order 15 pounds every two weeks they will order 3 times. 15 times 3 is 45. Your answer is 3 bags
2 goes into the 7 weeks 3 times with a remainder of a week until they buy another 15 pounds of onions. So 15 x 3 = 45 pounds. They’ll have 45 pounds of onions in 7 weeks as on the 8th week they’ll buy another 15 pounds but the question only wants to know by the 7th week.

Which of the following is a quadratic function?
f(x) = 0x + 3x - 6
f(x) = 2x + 5
f(x) = 3 - 4x^2
f(x) = 2^x

Answers

Answer:

f(x) = 3 - 4x^2

Step-by-step explanation:

Quadratic Equation form:   f(x) = ax² + bx + c

Quadratic function has a x (variable) with and exponent of 2.

They also leave a curve line on a coordinate plane. As you can see on the picture. ↓

Peanuts worth $2.25 a pound were mixed with cashews worth $3.25 a pound to produce a mixture worth $2.65 a pound. How many pounds of each are needed to produce 35pounds of mixture?

Answers

Answer:

14lbs cashews

21lbs peanuts

Step-by-step explanation:

What is the value of x in the equation 3/4 x + 24 = x − 12 ?

Answers

Answer:

x = 144

Step-by-step explanation:

3/4x + 24 = x - 12

3/4x - x = -12 - 24

3/4x - 4/4x = -36

-1/4x = -36

x = -36/-1/4

x = 144

PLEASE HELP ME! I WILL MARK BRAINLIEST IF YOU ARE CORRECT

Answers

Answer:

B

Step-by-step explanation:

The value of the polynomial for x = 3 is the value of P(3)

P(3) = 2(3)³ - 7(3)² + 7(3) - 12 = 54 - 63 + 21 - 12 = 0 → B

Ok these are the question I NEED help on (don’t show work

Answers

Answer:

Step-by-step explanation:

6. H - (-2,2)

14. F - Quadrant IV

15. B - All points have y > 1

Answer:

6. H (-2, 2)

14. F (Quadrant IV)

15. B (All points have y [tex]\geq[/tex] 1)

Step-by-step explanation:

Picture below shows that all points are in y [tex]\geq[/tex] 1 (for number 15)

my question is in the screenshot

Answers

Answer:

C

Step-by-step explanation:

5 x 3 = 15 and 15 x 2 = 30 ft

solve this plz????? thx

Answers

Answer:

AOD i think

Step-by-step explanation:

Answer:

angle aob

Step-by-step explanation:

Can someone please help me with this expanding brackets problem ? Quick ! I will give 20 points :)

Answers

Step-by-step explanation:

[tex](x + 1)(x - 6)(x + 7)[/tex]

[tex] {x}^{2} - 6x + x - 6(x + 7)[/tex]

[tex] {x}^{3} + 7x - 6 {x}^{2} - 42x + {x}^{2} + 7x - 42[/tex]

[tex] {x}^{3} - 5x {}^{2} - 35x - 42[/tex]

Write the equation of the line of the line that passes through the point (3, -6) and a slope of 5

Answers

Answer:

y=5x-21

Step-by-step explanation:

Jim can make 2 cupcakes (the y value) with one cup of flour (the x value). How many cupcakes can he make with
5 cups of flour?

Answers

10 cupcakes . 5x2 = 10

8/9 divided by 5? :’)

Answers

Answer:

8/45 or 0.177...... (the seven continues forever).

Step-by-step explanation:

8/9 ÷ 5

First, turn 5 into a fraction. That will be 5/1

8/9 ÷ 5/1

When you're dividing fractions, you flip the second fraction and turn the division sign to a mutiplication sign

8/9 ÷ 1/5

8/9 * 1/5

Now you multiply. We will multiply the numerator and then the denominators through since there are no common factors.

8 * 1/9 * 5

8/45

A high school teacher gives three regular exams during a semester and one final exam at the end of the semester. A student’s final grade is found by taking of the student’s three regular exam scores and then adding 40% of the student’s final exam score. Sophia earned scores of 78, 92, and 80 on the three regular exams and a score of 90 on the final exam. What is Sophia’s final grade?

Answers

To get an average score of 80% (out of four exams), a total of 4*80%=320% is needed, so the minimum required for the 4th test is 320-(75+97+60)=88.
To get an average score of 89% (out of four exams), a total of 4*89%=356% is needed, so the maximum required for the 4th test is 356-(75+97+60)=124, which is impossible.
So the next exam grade must range between 88 and 100 to get a grade b in the class.

Hoped I help! Mark brainly it would help<3

20 POINTS
WILL MARK BRAINLIEST
SOLVE THESE PLEASE

Answers

1a) x = 5, y = 2
b) x = 2, y = -1
2a) x = 2, y = 1
b) x = -0.3, y = 2.4
3 don’t know sorry
4a) x = -7, y = 3
b) x = -3.2, y = -23.8

Answer:

1a) x = 5, y = 2

b) x = 2, y = -1

2a) x = 2, y = 1

b) x = -0.3, y = 2.4

3 don’t know sorry

4a) x = -7, y = 3

b) x = -3.2, y = -23.8

Step-by-step explanation:

Sam bought a football jersey on sale for 40% off. He paid $30, and it was originally priced at $45 was he charged the correct amount

Answers

no, he should have paid $33

Answer:

No, because he is being charged more than what the discount is.

45/40=18 $18 $45-$18=$27 He should be charged $27.

(x+3)^2 = x^2-3(1-x)

Answers

(x+3)(x+3) = x^2 -3 + 3x
x^2 + 3x + 3x + 9 = x^2 + 3x - 3
x^2 + 6x + 9 = x^2 + 3x - 3
6x + 9 = 3x - 3
3x + 9 = -3
3x = -12
x = -4

Check:
(-4+3)^2 = (-4)^2 - 3(1+4)
(-1)^2 = 16 - 3(5)
1 = 16-15
1 = 1 :)

Helppppppppp fasttttttt pleaseeeeeee!!!!!!!

Answers

Answer:

(3x⁷)⁴ = 3⁴x²⁸ = 81x²⁸

because (3x⁷)⁴ = cx^n

=> c = 81

n = 28

Please help!!! I will mark someone brainliest!

Answers

Answer:

a = 8, b = [tex]\frac{3}{2}[/tex]

Step-by-step explanation:

Given the exponential function

f(x) = a[tex]b^{x}[/tex]

To find a and b use the given coordinate points on the graph

Using (0, 8 ), then

8 = a[tex]b^{0}[/tex] [ [tex]b^{0}[/tex] = 1 ] , then

a = 8

f(x) = 8[tex]b^{x}[/tex]

Using (2, 18 ) , then

18 = 8b² ( divide both sides by 8 )

[tex]\frac{18}{8}[/tex] = b² , that is

b² = [tex]\frac{9}{4}[/tex] ( take the square root of both sides )

b = [tex]\sqrt{\frac{9}{4} }[/tex] = [tex]\frac{3}{2}[/tex]

Thus

f(x) = 8[tex](\frac{3}{2}) ^{x}[/tex]

what is 10x 10 x 10 x 10

Answers

Answer:

10^4 or 10000

Step-by-step explanation:

The multiplication of 10x 10 x 10 x 10 is 10000.

We have given that the

10x 10 x 10 x 10

We have to find the multiplication of the above 10.

What is multiplication?

Multiplication is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division.

here we have

10 x10=100

10x100=1000

10x1000=10000

Therefore the multiplication of 10x 10 x 10 x 10 is 10000.

To learn more about the multiplication visit:

https://brainly.com/question/10873737

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