All categories

4 years ago

Solve the equation using the distributive property and properties of equality.

Mathematics

2 answers:

valina [46]4 years ago

7 0

Answer:

C) 8

Step-by-step explanation:

The Distributive property says a(b+c)=ab+ac, using this knowledge, follow the steps provided below to solve the problem :)

1) Distribute -5 to a and 3:

-5a-15=-55

2) Add 15 to both sides:

-5a=-40

3) Divide both sides by -5:

a=8

hjlf4 years ago

6 0

Answer:

answer is definitely c because i gopt it right

Step-by-step explanation:

You might be interested in

Consider the points P(0,5), Q(9, 2), R(7, -4), and S(-2, -1). What type of quadrilateral

Ghella [55]

Answer:

a trapezium

Step-by-step explanation:

by plotting and joining the points you will see a quadilateral with four sides which has one pair of opposite sides parallel but not equal and that is a trapezium

7 0

3 years ago

Students in a high school mathematics class decided their term project would be a study of the strictness of

faltersainse [42]

Answer:

The answer is observational study

5 0

3 years ago

An electronics store sells a large flat screen TV for $1,699. Last month the store sold 8 of these TV's. About how much money di

m_a_m_a [10]

1,699 * 8 would get 13,592. The TVs were 13,592 sold together.

8 0

3 years ago

Read 2 more answers

A recipe for banana bread spread requires 3 cups of bananas for every 1 1/2 cups of sugar used. At this rate, how many cups shou

anyanavicka [17]

Answer:

We need 1 cup of sugar for 2 cups of bananas

Step-by-step explanation:

We can use proportions to solve this problem. Put bananas on the top and sugar on the bottom

3 cups 2 cups bananas

-------------- = ------------------

1 1/2 cups x cups sugar

Using cross products

3 *x = 2 * 1 1/2

Changing to decimals

3x = 2* 1.5

3x = 3

Divide by 3

3x/3 = 3/3

x=1

We need 1 cup of sugar for 2 cups of bananas

6 0

3 years ago

Read 2 more answers

If sin square theta = 0.75, then cos =

sergeinik [125]

Answer:

$\cos\theta=\pm0.5$

Step-by-step explanation:

Given:

$\sin^2\theta=0.75$

To find $\cos\theta$

Using trigonometric relations for sums and differences of squares of the ratios.

We know:

$\sin^2\theta+\cos^2\theta =1$

Plugging in $\sin^2\theta=0.75$ in the above relation.

$0.75+\cos^2\theta =1$

Subtracting both sides by 0.75.

$0.75+\cos^2\theta-0.75 =1-0.75$

$\cos^2\theta =0.25$

Taking square root both sides.

$\sqrt{\cos^2\theta} =\sqrt{0.25}$

∴ $\cos\theta=\pm0.5$ (Answer)

6 0

3 years ago