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horsena [70]
3 years ago
11

Solve each of the following equations for the missing variable.

Mathematics
2 answers:
White raven [17]3 years ago
6 0

Answer:

x = -20

Step-by-step explanation:

- 2.5x - 10 = 40

Collect like terms and simplify

- 2.5x = 40 + 10 \\  - 2.5x = 50

Divide both sides of the equation by -2.5

\frac{ - 2.5x}{ - 2.5}  =  \frac{50}{ - 2.5}

Simplify

x =  - 20

Ierofanga [76]3 years ago
4 0
The answer for -2.5x-10=40 would be:
x = - 20.
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Find the product of (3x+2)(3x+7)
Alja [10]

Answer:

it is a quadratic equation

Step-by-step explanation:

3x(3x+7) +2(3x+7)

9x square +21x +6x+14

= 9x square +27x +14

6 0
4 years ago
I dont understand what the question is asking me​
kipiarov [429]

Answer:

\huge\boxed{\sf

Step-by-step explanation:

∠E = 1/2 (mCD - mAB)

<u>Where mCD = 110° and mAB = 30°</u>

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∠E = 1/2 (80°)

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\rule[225]{225}{2}

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6 0
3 years ago
2 × 30 = 2 × (3 × 10)
vampirchik [111]

Answer:They are equivalent, if that's what your trying to find out.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Please answer this question now
vichka [17]

Answer:

320 sq in

Step-by-step explanation:

4(1/2*8*16) + (8*8)

= 4(64) + (64)

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6 0
3 years ago
i don’t know how to divide integers and i have a test tomorrow based on adding subtracting multiplication and division on intege
ryzh [129]

In order to divide integers, the first thing to check is the sign:

- When dividing two positive integers, the result will be a positive integer.

- When dividing two negative integers, the result will be a positive integer.

- When dividing integers with different signs (one negative and one positive), the result will be a negative integer.

Then, after checking the sign, we need to calculate the value of the division.

Some examples of divisions are:

\frac{24}{8},\frac{-15}{5},\frac{-100}{-10}

In the first division, the result is 3, because we have that 8 * 3 is equal 24.

Also, both numbers are positive, so the result is also a positive number.

In the second division, the result is -3, because 5 * (-3) is equal -15.

The result is negative, because the two numbers have different signs.

In the third division, the result is 10, because -10 * 10 is equal -100.

The result is positive, because both numbers are negative.

4 0
1 year ago
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