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Mariana [72]
3 years ago
12

Which expression is equivalent to –5(6x – 3) – 4(–2x + 1) + 3(4x) – 8?

Mathematics
2 answers:
Sedaia [141]3 years ago
8 0

Answer:

C = -10x+3

Step-by-step explanation:

So the simplified version of the main expression is -10x+3. after finding the main expression you just need to simplify the rest of them too.

A. = -10x+9

B. = 8x-9

C. = -10x+3

D. = -10x-3

Now that you simplified all the expressions, you can pick out the one that's the same as the target expression, which is C.

Lemur [1.5K]3 years ago
7 0
Yes the answer is c.
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The diagram represents a reduction of a triangle by using a scale factor of 0.8.
Alekssandra [29.7K]

Answer:

4.8 inches

Step-by-step explanation:

<em>See comment for complete question</em>

Represent the larger triangle with 1 and the smaller with 2.

So, we have:

H_1 =6\ in -- height of 1

Required

Determine H2 --- Height of 2

To do this we apply dilation formula.

Original * Scale\ Factor = New

In this case:

H_1 * Scale\ Factor = H_2

Substitute 6 for H1 and 0.8 for Scale Factor

6* 0.8 = H_2

4.8= H_2

Hence, the height of the smaller triangle is 4.8 inches

3 0
3 years ago
Ms. Alvarez has $1482 to spend on origami paper. how many packs can she buy
Ostrovityanka [42]

a certain amount of paper

8 0
4 years ago
PLEASE HELP! I will give you the brainiest and A LOT of points!
LiRa [457]

Answer:

Company B pays more!

Step-by-step explanation:

All you have to do is...

25,000x10=250,000

+

1,600x10=16,000

= 266,000(company a)

28,500x10=285,000

+

700x10=7,000

= 292,000(company b)

6 0
3 years ago
Justine charges $25 to wash a dog. She washed 5 dogs on Saturday and then some more on Sunday. She made $325 for the weekend. Ho
Marrrta [24]

Answer

• A. Equation: 25(5 + x) = 325

,

• B. Answer: 8 dogs

Explanation

Given

• Charge to wash a dog: $25.

• She washed 5 dogs on Saturday and then some more on Sunday.

• She made $325 for the weekend.

Procedure

She charges $25 per wash, she made $325 for the weekend, and we know that on Saturday she washed 5 dogs, but we don't know how many she washed on Sunday. Thus, we have to build an equation in which the number of dogs washed on Sunday is represented by x (as we do not know the real number).

Considering that the total money made has to be equal to the multiplication of the charge times the dogs washed, the equation is:

25(5+x)=325

Then, we have to solve for x to know how many dogs did she wash on Sunday.

0. Multiplying the parenthesis

125+25x=325

<em>2. Subtracting 125 from both sides of the equation</em>

125-125+25x=325-12525x=200

<em>3. Dividing both sides of the equation against 25</em>

\frac{25x}{25}=\frac{200}{25}x=8

8 0
1 year ago
In a random sample of 625 people, it was found that 225 of them frequently check their work email when they are at home. Find th
VMariaS [17]

Answer: (0.3224,0.3976)

Step-by-step explanation:

Given : Sample size : n=625

Number of people check their work email when they are at home =225

The probability of people check their work email when they are at home :p=\dfrac{225}{625}=0.36

Significance level : \alpha:1-0.95=0.05

Critical value : z_{\alpha/2}=1.96

The confidence interval for population proportion is given by :-

p \pm z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}\\\\=0.36\pm(1.96)\sqrt{\dfrac{0.36(1-0.36)}{625}}\\\\=0.36\pm0.037632\\\\=(0.322368,0.397632)\approx(0.3224,0.3976)

4 0
3 years ago
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