I need help. If you answer it correctly, you will get a crown, and, or, five stars. I have the questions, but I want to make sure it's right. Thank you!

Answer:

97

Step-by-step explanation:

Marcus is aiming for an A- (90-94 percent). The question states that there is another test awaiting that is worth 100 points. In order to find the answer to the question, you need to:

1.) Add 400 + 100, to show how many points there are in total.

2.) Use the answer choices and add it to 353.

88 + 353 = 441

93 + 353 = 446

97 + 353 = 450

3.) Find the percentage of the sums.

441/500 = 88%

446/500 = 89%

450/500 = 90%

Since Marcus is aiming for an A-, we can conclude that obtaining 97 points will help Marcus achieve an A-.

Answer:

4

Step-by-step explanation:

1/4(15+5)-1

1/4 x 20-1

1/4 x 20 = 5

5-1 = 4

Answer:

4

Step-by-step explanation:

Answer:

No Solution

Step-by-step explanation:

If we solve for the equation, we get a statement that isn't true.

9x + 7 = 9x - 4

-9x        -9x

----------------------

7 = - 4

*subtract 9x from both sides*  

We know that 7 ≠ -4, so there aren't any solutions to this problem.

Hope this helped!

Answer:

$12381.82

Step-by-step explanation:

Answer:

8 gallons at $7

12 gallons at $2

Step-by-step explanation:

x gallons at $7 with the remaining (20 - x) gallons at $2 to get 20 gallons at $4

x(7) + (20 - x)(2) = 20(4)

Distribute

7x + 40 - 2x = 80

Combine like terms

5x + 40 = 80

Subtract 40 from both sides

5x = 40

Divide both sides by 5

x = 8 gallons at $7

20 - x = 12 gallons at $2

Answer:

D) 27

Step-by-step explanation:

4 + 2 = 6 (pets)

For each pet he spends $4.50, so:

6 × 4.50 =

6 × 4 = 24 +

6 × 0.5 =

6/2 = 3

24 + 3 = 27

So D.

:)

Answer:

D. Mr. Winston spends $27 dollars at the pet store.

Step-by-step explanation:

It's multiplication. He has 6 pets, he spends $4.50 for each pet.

4.50 * 6 = 27.

Mr. Winston spends $27 on pet food for his 6 pets.

Hope this helps!

If u like it, plz mark me as brainliest!

Answer:

Might be wrong, but, Stephan bought the bike and helmet for 115.2$

Step-by-step explanation:

(might be wrong)

$307 and 2 cent i think

Answer:

2.5 hours

Step-by-step explanation:

o-O

|-21.5|

it doesn't matter which direction because its just furthest from 0 so you just need to find the highest number and you can ignore any negative signs

Answer:

This should help

Step-by-step explanation:

Answer:

(1/2)(6)(a) < 18

Step-by-step explanation:

We know the formula for the area of a triangle is 1/2 b x h

The base is 6in and the height is a, so the equation is 1/2 6 x a.

The area is less than 18 sq in, so 1/2 x 6 x a < 18

Now, let's solve the inequality.

1/2 6 x a < 18

3 x a < 18

a < 6

Hope this helps :)

Answer:

the answer is that you have to follow these rules.

Step-by-step explanation:

1. Simplify each side of the equation by removing parentheses and combining like terms.

2. Use addition or subtraction to isolate the variable term on one side of the equation.

last but not least

3. Use multiplication or division to solve for the variable.

Answer:

$17,812.50

Step-by-step explanation:

hope it helps

Answer:

Melinda adds $12 to her savings account each week and Marcus adds $14 each week  

Melinda adds $2 less than Marcus

Step-by-step explanation:

Melinda:

135 - 75 = 60

60 ÷ 5 = 12

She saves $12 each week

Marcus:

y=14x+25

y=14x5+25

y= 70+25

y=95

95-25=70

70÷5= 14

Marcus saves $14 each week

Answer:

a) 2.6  b) -20   c) -44  d) -1494

Step-by-step explanation:

Terms:

A term is a single mathematical expression. It may be a single number (positive or negative), a single variable ( a letter ), several variables multiplied but never added or subtracted. Some terms contain variables with a number in front of them. The number in front of a term is called a coefficient.

a) 3+1.4+(-7)

3+1.4-7

Calculate.

-2.6

Terms:  3, 1.4, -7

b) 50+3(-10)+ 2(-20)

Multiply.

50-30-40

Calculate.

-20

Terms: 50, 3, -10, 2, -20

c) 4+(-50)+2

4-50+2

Calculate.

-44

Terms: 4, -50, 2

d) (4+(-170)) (5+4))

(4-170)+(5+4)

Add.

(4-170)x9

Calculate.

-166x9

Multiply.

-1494

Terms: 4, -170, 5, 4

Hope this helps :)

Answer:

b

Step-by-step explanation:

Answer:

x = 11(13/14)

Step-by-step explanation:

3/5(x – 7/10) = -31/4

open the bracket:

3/5 * x – 7/10 = -31/4

3/5 * –7x/10 = -31/4

3/5 + 31/4 = 7x/10

(12+155)/20 = 7x/10

167/20 = 7x/10

cross multiply:

140x = 1670

x =1670/140

x = 11(130/140)

x = 11(13/14)

The value of x is 1/5.

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

3/5 (x − 7/10)= −3 1/4

Now, Solving for x

3/5 ( x- 7/10 )= 13/4

x- 7/10 = -13/4 x 5/3

x- 7/10 = -65 /12

x= -65/12 + 7/10

x= 24/ 120

x= 1/5

hence, the value of x is 1/5.

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Answer: 65 7/12

Step-by-step explanation: I took the test

Answer:

the answer is 65 7/12

Step-by-step explanation:

took the k12 quiz

hope this helps :D

quiz name: 5.18 Quiz: Model the Real World with Multistep Equations

Answer:

No

There are infinitely many solutions to the system.

{36x+21y=24312x+7y=81

Multiply the second equation by 3.

3(12x+7y36x+21y=81)=243

Subtract this new equation from the first equation.

36x+21y−(36x+21y0+0=243=243)=0 true

There are infinitely many values of x and y are possible.

One or many equations having the same number of unknowns that can be solved simultaneously called as simultaneous equation. And simultaneous equation is the system of equation.

Given:

Two school groups go to a roller skating rink.

One group pays $243 for 36 admissions and 21 skate rentals.

The other group pays $81 for 12 admissions and 7 skate rentals.

Let x represent the cost of admission and let y represent the cost of a skate rental.

We have a system of equations,

36x + 21y = 243   {equation 1}

12x + 7y = 81        {equation 2}

Simplifying equation 1 we get,

36x + 21y = 243  

Divide by 3,

12x + 7y = 81      

That means, there are infinitely many solutions possible.

Therefore, there are infinitely many solutions possible.

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Answer:

Sabrina will train 21 miles next week for the race.

Step-by-step explanation:

2/3 of 4.2=2.8

%25 more of 2.8=3.5

3.5*6=21 miles

Answer:

3.5*6=21 miles

Step-by-step explanation:

Answer:

126.5

Step-by-step explanation:

first, break the figure into a triangle and a square (do I have to tell u where)

the square: 11*8=88

the triangle: 11*7=77          77/2= 38.5

88+38.5= 126.5

The solution is, the area of the given figure is : 126.5cm^2.

Area is the measure of a region's size on a surface. The area of a plane region or plane area refers to the area of a shape or planar lamina, while surface area refers to the area of an open surface or the boundary of a three-dimensional object.

here, we have,

given that,

we need to find  the area of the given figure.

so, we have ,

first, break the figure into a triangle and a square

now, we get,

the square:

area= 11*8

       =88

and, we have,

the triangle:

area =1/2* 11*7

       =1/2*77          

       = 77/2

       = 38.5

so, we get,

the area of the given figure is:

88+38.5= 126.5

Hence, The solution is, the area of the given figure is : 126.5cm^2.

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Answer:

1\5

Step-by-step explanation:

lcm of 9 and 15 = 45

5/45 + 4/45

= 9/45

= 1/5

Real-life applications of slope inculde roofs, roads, handicap ramps, funiculars, cable cars, mountains for skiing, downhill cycling, and snowboarding/dirtboarding, roller coasters, skate ramps, and BMX jumps.

Answer:

c it's only the closest/similar to the triangle

Answer:

Step-by-step explanation: C because it looks very similar

Answer:How would you describe the shape of the histogram? Bell-shaped: A bell-shaped picture, shown below, usually presents a normal distribution. Bimodal: A bimodal shape, shown below, has two peaks. This shape may show that the data has come from two different systems.

Step-by-step explanation:i

Answer: y= -8/4x+2

Step-by-step explanation:

find our y-intercept and slope

(rise over run to find your slope)

the two points it provides are what you will use to find the slope

see how for you run from point A to B then your rise as well

it should be rise=-8 run=4

0,2 is your y-intercept

now use your equation y= mx+b

b=your y-intercept and mx= your slope

plug the numbers in and you will get the answer

Answer: = − 3 /2

Precalculus, Matrix

Rearrange terms, Combine multiplied terms into a single fraction, distribute, Multiply all terms by the same value to eliminate fraction denominators, Multiply all terms by the same value to eliminate fraction denominators . Cancel multiplied terms that are in the denominator . Multiply the numbers . Add 4 to both sides of the equation . Simplify.

Divide both sides of the equation by the same term  . Simplify

Answer:

z = -3/2

Step-by-step explanation:

Our goal here is to solve -1/3 (4+z)=-5/6 for z.

Begin by multiplying both sides by 6, to eliminate the fractions:

-2(4 + z) = -5

Isolate (4 + z) by dividing both sides by -2:  4 + z = 5/2

Finally, determine z by subtracting 4 from both sides:  z = 5/2 - 8/2 = -3/2

z = -3/2