MATHEMATICS HIGH SCHOOL

What is the value of the expression below when y = 8 and z = 9?
5y – 2z

Answers

Answer 1
Answer:

Answer:

\boxed {\tt 22}

Step-by-step explanation:

We are given the expression:

5y-2z

We want to find the value of the expression when y=8 and z=9. Therefore, we must substitute 8 in for y and 9 in for z.

5(8)-2(9)

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

Multiply 5 and 8.

40-2(9)

Multiply 2 and 9.

40-18

Subtract 18 from 40.

22

The value of the expression 5y-2z at y=8 and z=9 is 22.

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Solve for x. m/2=x+84

please show work i really need help! thank you ​

Answers

Answer:

Step-by-step explanation:

Start with 180-38. That gives us 142. We know that 2 of the sides are the same so the two missing values are split evenly between 142. Angle 2 is 71.

71=x+84
subtract 84 from both sides

x=-13

The function below models the correlation between the number of hours a plant is kept in sunlight (x) and the height (y), in mm, to which it grows:y = 4 + 2x
What does the y-intercept of this function represent?
The original height of the plant was 4 mm.
The original height of the plant was 2 mm.
The height of the plant increases by 2 mm for every hour of sunlight it receives.
The height of the plant increases by 4 mm for every hour of sunlight it receives.

Answers

Remember that the y-intercept is obtained when the value of x is set to zero. This means that the y-intercept is the value of the height without sunlight yet. This also refers to the original height of the plant. This gives:

y = 4 + 2(0) = 4

So, the original height of the plant is 4 mm.

The formula also indicates that when sunlight is present, a height of 2mm is increased every hour of sunlight exposure.

Answer:The original height of the plant was 4 mm.

Step-by-step explanation:

Simplify: xyxy 27-4-8-3-8 + 1​

Answers

Answer: -22 you’re welcome

log(x+3) = log 8 - log 2
agree or disagree and justify

Answers

Answer:

Step-by-step explanation:

log (x+3)=log8-log2

log(x+3)=log(8/2)=log4

x+3=4

x=4-3=1

Sheila bought 10 1⁄2 oz of almonds for $3.36. How much did the almonds cost per ounce?

Answers

3.36/10.5 = 0.32

It costs $0.32 an ounce

If the ones digit of a number greater than 1 is 0,what factor or factors must that number have

Answers


If the units digit is zero, then you have an even number ...
' 2 ' must be one of its factors.

It must also have two or more places ... it's greater than 9.
If it had only one place, and its units digit were zero, then
the whole thing would be zero.

Since it has two or more places,  5  and  10  are also factors.
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