MATHEMATICS HIGH SCHOOL

У= -2
4х – Зу = 18
Solve System Of Equations Using Substitutions

Answers

Answer 1

Answer:

Answer:

x = 3

Step-by-step explanation:

4x - 3(-2) = 18

4x + 6 = 18

4x = 12

4x/4 = 12/4

x = 3

We're solving for x right?

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Solve for x.

x2 + 9x = 0

Answers

You can use sum-product but the easiest way is to isolate x like this: x^2 + 9x (-9x) = 0 (-9x) x^2 = -9x x^2 (/x) = -9x(/x) x=-9

Help plz :(The relationship between the number of cups of water, w, and the number of cups of
lemon juice, j, used in a recipe is described by the equation shown.
j = 2w

How many cups of water are needed for each cup of lemon juice?
Show your work.

Answers

Answer:

Step-by-step explanation:

The relationship between the number of cups of water, w, and the number of cups of

lemon juice, j, used in a recipe is described by the equation shown.

j = 2w

To evaluate the number of cups pr cup of juice, find the value of w given j=1

1=2w

w=1/2

iHalf a cup of water is needed for each cup of lemeonce ju

(-47) - 33 ÷ (-3) - 3 × (-7)

Answers

Final answer:

To simplify the expression (-47) - 33 ÷ (-3) - 3 × (-7), use the order of operations (PEMDAS/BODMAS) to calculate step by step. The simplified expression is -15.

Explanation:

To simplify the expression (-47) - 33 ÷ (-3) - 3 × (-7), we need to follow the order of operations (PEMDAS/BODMAS).

PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).

First, evaluate the division: 33 ÷ (-3) = -11.
Next, evaluate the multiplication: 3 × (-7) = -21.
Now, we have (-47) - (-11) - (-21).
Since we have double negatives, we can simplify this to -47 + 11 + 21.
Finally, we add the numbers: -47 + 11 = -36, and -36 + 21 = -15.

Therefore, the simplified expression is -15.

Learn more about simplifying expressions here:

brainly.com/question/36385368

#SPJ2

The answer is -15(negative 15)

Find the value of F(5) for each function.

f(a) = 3(a + 2) - 1

Answers

Answer:

Step-by-step explanation:

first plug it in, then solve. Step by step:

3(5 + 2) - 1

3(7) - 1

21 - 1

What is the square root of 2?

Answers

Hi There!

What is the square root of 2?

The answer is 1.4 or 1.41421356237

The answer is not 1.4

The answer is 2

2. A family spends 1/10 of its annual income for housing, 1/4 for food and clothing, 1/5 for general expenses, and 2/15 for entertainment. What fractional part of their income is spent on these items altogether?A. 6/41
B. 11/12
C. 41/60
D. 1/7

15. Jane is making a suit which requires 2 5/8 yards for the jacket and 1 3/4 yards for the skirt. What is the total amount of material she needs?
A. 3 1/2yards
B. 4 yards
C. 4 3/8 yards
D. 3 2/3 yards