the question is "get y by itself" and the equation is 5x + 5y =15

Answer:

7 : 4

Step-by-step explanation:

Answer:

A, C, and E are true.

Step-by-step explanation:

These are all done the same way.

Look at (A). If the statement is true, then 8² + 15² = 17², because the Pythagorean theorem says that if you square the lengths of the two shorter sides of a right angle, their sum will equal the square of the longest side: a² + b² = c².

8² = 64.  15² = 225. So 8² + 15² = 64 + 225 = 289.

So if the statement is true, then 289 = 17².

And yes 17² = 289, so the statement is true.

On the other hand, (B) is false. 7² + 24² = 49 + 576 = 625

But the third side squared, 35² = 1225, not 625.

Answer:

c. 10, -10

Step-by-step explanation:

10x10=100

-10x-10=100

Answer:C

Step-by-step explanation: when doing the square root of 100 it’s 10 but -10 times -10 is also 100 because of double negatives

Answer:

the third one is not intersenting

Step-by-step explanation:

Answer:

x=49

Step-by-step explanation:

180-131=49

Answer:

its b

Step-by-step explanation:

i just did that question last period

Answer:

The answer is A.

Step-by-step explanation:

The common difference is five because 7-2=5, 12-7=5, 17-12=5, 22-17=5, and so on.  

Answer:

4 minutes left

Step-by-step explanation:

20 - 16 = 4

The longer can they stay in the pool 4 minutes left.

We have given that,

Lauren and Gina's mother told her daughters they can

swim in the pool for 20 minutes.

First, they swam laps,

The pool for 7 minutes.

Then they swam underwater for one minute.

Then they played water polo for 8 minutes.

We have to determine the longer can they stay in the pool.

1 minute =60 second

4 minutes left

20 - 16 = 4

The longer can they stay in the pool 4 minutes left.

To learn more about the time visit:

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Step-by-step explanation:

Hello,

First, there are 8 possible outcomes for the game spinner.

Second, the spinner is on 5, meaning that the outcome is 5.

Try to work with this, and if you need more help, I’ll answer back if I can.

Answer:

okay see the correct answer is D

Step-by-step explanation:

first 0f all a sample space means the possible outcome for all possibilities. like just as shown in the spinner the 1 2 3 4 5 6 7 8, or it could be in a dice 1 2 3 4 5 6 like that

second of all the outcome shown is wh,at the possibility landed on like as shown its five since the arrow of the spinner is there, as for a dice for example it could have been 4 4 since dice are always 2

I SERIOUSLY AM SKIPPING MY MATH CLASS IM HELLA BORED BUT DO U UNDERSTAND MATE

Answer:

Explanation:

|4b + 4| = |2b + 8|

Solve absolute value

|4b + 4| = |2b + 8|

Either 4b + 4 = 2b + 8 or 4b + 4 = −(2b + 8)

4b + 4 = 2b + 8 (Possibility 1)

4b + 4 − 2b = 2b + 8 − 2b (Subtract 2b from both sides)

2b + 4 = 8

2b + 4 − 4 = 8 − 4 (Subtract 4 from both sides)

2b = 4

2b / 2 = 4 / 2 (Divide both sides by 2)

b = 2

4b + 4 = −(2b + 8) (Possibility 2)

4b + 4 = −2b − 8 (Simplify both sides of the equation)

4b + 4 + 2b = −2b − 8 + 2b (Add 2b to both sides)

6b + 4 = −8

6b + 4 − 4 = −8 − 4 (Subtract 4 from both sides)

6b = −12

6b / 6 = -12 / 6 (Divide both sides by 6)

b = -2

Answer:

the answer is C

Step-by-step explanation:

hope this helps

Answer:

18 girls

Step-by-step explanation:

6:9

6+9 = 15

we multiply each part of the ratio by 3

6*3 = 18 girls

9*3 = 27 boys

Answer:

126 = 3x

Step-by-step explanation

Answer:

-225

Step-by-step explanation:

A withdraw means taking out -225  dollars

Answer:

See Below.

Step-by-step explanation:

Statements:                                                           Reasons:

[tex]\displaystyle 1)\text{ } \Delta APB \text{ and } \Delta AQC \text{ are equilateral triangles}[/tex]      Given

[tex]\displaystyle 2) \text{ } m \angle PAB = 60[/tex]                                                     Definition of equilateral.

[tex]3)\text{ } m \angle QAC = 60[/tex]                                                     Definition of equilateral.

[tex]4)\text{ } m\angle PAB = m\angle QAC[/tex]                                          Substitution

[tex]5)\text{ } m\angle PAC=m\angle PAB+m\angle BAC[/tex]                       Angle Addition

[tex]\displaystyle 6)\text{ } m\angle QAB=m\angle QAC+m\angle BAC[/tex]                       Angle Addition

[tex]7)\text{ } m\angle QAB=m\angle PAB+m\angle BAC[/tex]                       Substitution

[tex]\displaystyle 8)\text{ } m\angle PAC=m\angle QAB[/tex]                                         Substitution

[tex]9)\text{ } PA=BA[/tex]                                                          Definition of equilateral

[tex]10)\text{ } AC=AQ[/tex]                                                        Definition of equilateral

[tex]\displaystyle 11)\text{ } \Delta PAC \cong \Delta BAQ[/tex]                                            Side-Angle-Side Congruence*

[tex]\displaystyle 12)\text{ } PC=BQ[/tex]                                                        CPCTC

* SAS Congruence:

PA = BA

∠PAC = ∠QAB

AC = AQ

Answer:

12x^2-7x-10

Step-by-step explanation:

I did binomial into binomial method

3x(4x-5)+2(4x-5)

12x^2-15x+8x-10

12x^2+(-15+8)x-10

12x^2-7x-10

Answer:

181cm²

Step-by-step explanation:

Given

Radius of a circle = 7.6cm

Area of the circle = \pi r²

Substitute

Area of the circle = 3.14(7.6)²

Area of the circle  = 3.14(57.76)

Area of the circle = 181.3664cm²

Area of the circle to 3sf is 181cm²

Answer:

In 11 months, the number of DVDs sold and Blue-Ray discs sold will be same, 791 of each.

Step-by-step explanation:

In the equation d = 923-12t, substitute 505+26t (from the second equation) for 'd'. We get

505 + 26t = 923 - 12t

-505 + 12t   -505 + 12t

38t     =       418

t=11

d = 923-12(11) = 791

d = 505+26(11) = 791

After 11 months, selling 791 of each.

Hope this helps.

Answer:

791

Step-by-step explanation:

Answer and Step-by-step explanation:

The complete options to choose from in order to explain her mistake are not shown, therefore I'll solve the problem generally.

To solve 1.8/0.3 easily we multiply but numerator and denominator by 10

(1.8*10)/(0.3*10) = 18/3 = 6

The dividend and the divisor should have been multiplied by 10 and the decimal point in the quotient should have been shifted to the right by Becca.

Both the dividend and the divisor must be changed such that there are no decimal places in the divisor before dividing decimals. Becca made a mistake by not taking this change into account.

Becca needed to multiply both the dividend (1.8) and the divisor (0.3) by 10 to get rid of the decimal places in order to divide 1.8 by 0.3 correctly. As a result, the issue would change to 18 3.

When the division is done properly, we see that 18 3 equals 6, leaving no residual.

Therefore, Becca made a mistake by failing to multiply both the dividend and the divisor by 10.

For similar questions on division

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Answer:

77°

Step-by-step explanation:

Angles on a straight line add up to 180

180 - 103 = b

180 - 103 = 77

Answer:

8.31

Step-by-step explanation:

By Pythagoras Theorem,

(10)² + x² = (13)²

=> x² = (13)² - (10)²

=> x² = 169 - 100

=> x² = 69

=> x = [tex]\sqrt{69}[/tex]

=> x ≈ 8.31

Hope it helps :)

Please mark my answer as the brainliest

Answer:

x=7,x=-1/2

Step-by-step explanation:

so x-7=0 or 2x+1=0

x=7 or 2x=-1

x=7,x=-1/2

if my answer helps please mark as brainliest.

Answer:

The answer actually rounds to 0.3196, but the computation is so long, we just count it as 0.3196. The real answer would be 0.31958762886.

Step-by-step explanation:

Answer:

B.

Step-by-step explanation:

It says that when her brother gives her an encouraging look, it boosts her confidence. So, I would assume it'd be that one.

Answer:

C.

She recalls the times when her mother prepared her for the ceremony.

Answer:

50 students voted

Step-by-step explanation:

Answer:

50

Step-by-step explanation:

If 50 students voted, or 1/10th of students voted for him, than you can multiply 5 by 10 to get your answer, which equals 50.

Answer:

b = 116⁰

we have:

b + 64⁰ = 180⁰

<=> b = 180⁰ - 64⁰

<=> b = 116⁰

Answer:

x = - 8/23

y = 40/23

Step-by-step explanation:

-5x- y = 0

and

-8x+3y = 8

The first step to solve this would be to get what one of the two variables equal. The easiest in this case is y from the first equation.

-5x-y = 0

-y = 5x

y = - 5x

Now you can take this y value and plug it into the section equation.

-8x + 3(-5x) = 8

-8x - 15x = 8

-23x = 8

x = - (8/23)

Once you get the x value you can plug it back into equation one to get y's value

-5*-(8/23)  - y = 0

40/23 - y = 0

y = 40/23

Answer:

lol

Step-by-step explanation:

Answer:

factoring out the 1/2 (that is the coefficient of the variable) would require you to divide the equation by one half, which is the same as multiplying by two. After doing this, the answer can be expressed as:

1/2 (d+12)

Step-by-step explanation:

Answer:

Step-by-step explanation:

Factor out a 1/2

[tex]\frac{1}{2}(d+12)[/tex]

Redistribute if you want to check your work

[tex]\frac{d}{2}+\frac{12}{2} =\frac{1}{2}d+6[/tex]