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4 years ago

Evaluate the expression for x=5, y=-3 and z=7 x + y + z

Mathematics

2 answers:

Nikitich [7]4 years ago

6 0

Answer:

Step-by-step explanation:

(Refer to image)

Replace the numbers with the variables and solve using order of operations

lorasvet [3.4K]4 years ago

3 0

Answer:

Step-by-step explanation:

convert all the value for x,y,z

5+-3+7

5+-3= 2+7 = 9

I used to decreased the negative 3 to 5 because of the sign negative attached beside the 3. but why the answer becomes to be positive 2? because the positive number which is 5 is greater than the negative 3 in the given.

I hope it helped you.

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33. The perimeter of a room is 22m.lf<br> the length of the room is 6.5m,<br> what is its width?

vredina [299]

The formula for perimeter is 2(Length) + 2(width)

Fill in the known information:

22 = 2(6.5)+ 2(width)

Simplify:

22 = 13 + 2(width)

Subtract 13 from both sides:

9 = 2(width)

Divide both sides by 2:

Width = 4.5m

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3 years ago

(3a)2 without exponents

Sophie [7]

Answer:

Step-by-step explanation:

3x2xa = 6a

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3 years ago

The average rate of change of g(x) between x = 4 and x = 7 is 5/6 . Which statement must be true?

Blizzard [7]

Answer:

$\frac{5}{6}=\:\frac{g\left(7\right)-g\left(4\right)}{7-4}$ would be the correct statement.

Step-by-step explanation:

As we know that

Average rate of change = Change in output / Change in input

= Δy / Δx

$=\frac{y_{2} -y_{1}}{x_{2} -x_{1}}$

$=\frac{g(x_{2})-g(x_{1})}{x_{2}-x_{1}}$

$=\frac{g(7)-g(4)}{7-4}$

As the average rate of change of g(x) between x = 4 and x = 7 is 5/6.

$\:Average\:rate\:of\:change\:=\:\frac{g\left(7\right)-g\left(4\right)}{7-4}$

$\frac{5}{6}=\:\frac{g\left(7\right)-g\left(4\right)}{7-4}$

Therefore, $\frac{5}{6}=\:\frac{g\left(7\right)-g\left(4\right)}{7-4}$ would be the correct statement.

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4 years ago

(20 POINTS AND BRAINLIEST)

Evgen [1.6K]

Answer:

a) The equation is y = 6x + 25 since the 25 is the initial fee.

b) We plug in 10 for x. 6 * 10 + 25 = $85.

c) We plug in 7 for x and get 6 * 7 + 25 = $69.

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3 years ago

Read 2 more answers

Help answer.............

kirill [66]

C(0,4)

B to C is (+1,+4)
so A to D is also (+1,+4)

3 0

3 years ago