MATHEMATICS HIGH SCHOOL

If (−3.5, y) is a solution to the equation 2x − 5y = 10, what is the value of y?a) -3.4
b) 13.75
c) -0.6
d) -3.75

Answers

Answer 1
Answer: 2x - 5y = 10
2(-3.5) - 5y = 10
-7 - 5y = 10
+7          +7
     -5y = 17
      -5     -5
        y = -3.4
The value of y is equal to A. -3.4.

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Give your answer to 2 s.f.

Answers

Answer:

87405

Step-by-step explanation:

5 over 8 divided by 3 over 10 in simplest form

Answers

I'm assuming you're referring to fractions.

First, invert the 3/10. 
3/10 = 10/3

Then multiply.

5/8 • 10/3 = 50/24
50/24 = 25/12

5/8 ÷ 3/10 = 25/12
5/8 / 3/10 =
5/8 x 10/3=
50/24=
25/12

Solve for the variable in 7 ∕28 = 25∕ x A. 20 B. 100 C. 4 D. 5

Answers

The solution to the equation 7/28 = 25/x is x = 100.

What is the solution to the equation?

Given the equation in the question:

7/28 = 25/x

To solve for the variable x in the equation 7/28 = 25/x, first, we cross multiply.

7/28 = 25/x

Cross-multiplying, i.e multiplying the numerator of the first fraction with the denominator of the second fraction and vice versa:

Hence:

7 × x = 28 × 25

7x = 700

Now, isolate x by dividing both sides by 7:

7x/7 = 700/7

x = 700/7

x = 100

Therefore, x has a value of 100.

Option B) 100 is the correct answer.

Learn more about equations here: brainly.com/question/14686792

#SPJ6
(7)/(28)=25 over x 

OK what can go in to 25? 

5

25/5=5/25/7/28/x=5
X= 5

Which algebraic expressions are polynomials? Check all that apply. 2x3 – x3y – 3x2 + 6x y2 + 5y – 2 – –x –x3 – x2 +

Answers

Answer:

B, C, E, F

Step-by-step explanation:

What is 9.39 to one decimal place

Answers

9.4 because the number after the firs decimal point is higher than 5

Answer:

9.4 is the answer XD :)

Step-by-step explanation:

The area of a right triangle is 270 m². The height of the right triangle is 15 m. What is the length of the hypotenuse of the right triangle?

Answers

The area of a triangle is calculated by the expression given as:

Area = bh/2

where b is the base and h is the height.

We calculate as follows:

270 = b (15) / 2
b = 36

hypotenuse = sqrt ( 15^2 + 36^2 ) = 39

Answer:

hypotenuse = 39m

Step-by-step explanation:

Area of a triangle= 1/2 * base * height

where base = ?

        height = 15

Plugin values into the formula:

270 = 1/2 base (15)

base = 270 (2)

               15

base = 36

hypotenuse = √(base² + height²)

                    = √( 36² + 15² )

                    = 39
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