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AleksAgata [21]
3 years ago
8

-3 + (-2) Please help I'm doing a test

Mathematics
2 answers:
skelet666 [1.2K]3 years ago
4 0

Answer:

5

Step-by-step explanation:

-3 + (-2)

- + - = +

so,

3 + 2 = 5

+5 is your answer, hope it helps :D

Harrizon [31]3 years ago
3 0

Hello There!

-3-2

=-3+-2

=-5

Here's a picture graph!

Hopefully, this helps you!!

Sokka

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A rectangular box with an open top has a length of x feet, a width of y feet, and a height of z feet. It costs $4.30 per square
almond37 [142]

Answer:

C=$(4.30xy+5.40(xz+yz))

Step-by-step explanation:

Surface Area of a Cuboid=2(LW+LH+HW)

Since the top is open

Surface Area = LW+2(LH+HW)

If Length = x feet,

Width =y feet

Height = z feet

Surface Area = xy+2(xz+yz)

Area of the base=xy

If it costs $4.30 per square foot to build the base

Cost of the base=Cost Per Square Foot X Area = $4.30xy

Area of the sides =2(xz+yz)

If it costs $2.70 per square foot to build the sides

Cost of the sides=Cost Per Square Foot X Area of the sides

= 2.70 X 2(xz+yz)

=5.40(xz+yz)

Cost of Constructing the Box = Cost of Constructing the Base + Cost of Constructing the Sides.

Therefore,

C=$(4.30xy+5.40(xz+yz))

7 0
3 years ago
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Anna11 [10]
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4 0
3 years ago
Given the function f(x) = 4x+2, what is the value of f(3)?
Masja [62]

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Concept:

Here, we need to understand the idea of evaluation.  

When encountering questions that gave you an expression with variables, then stated: "If x = a, y = b, z = c" (a, b, c are all constants), this means you should substitute the value given for each variable back to the expression.

Solve:

<u>Given function</u>

f(x) = 4x + 2

<u>Substitute value of the x into the expression</u>

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<u>Simplify by multiplication</u>

f(3) = 12 + 2

<u>Simplify by addition</u>

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Hope this helps!! :)

Please let me know if you have any questions

7 0
3 years ago
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irina [24]

Answer:

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Step-by-step explanation:

we know that

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kobusy [5.1K]

Answer:

x ≤  -259/9

Step-by-step explanation:

Change into a number equation   9(x + 26) ≤ -25

3 0
3 years ago
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