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NeTakaya
3 years ago
12

How do I solve 4a-3=2a+7

Mathematics
1 answer:
IRINA_888 [86]3 years ago
6 0
1).  Subtract  2a  from each side.        2a - 3  =  7

2).  Add  3  to each side:                       2a        =  10

3).  Divide each side by  2 :                  <em>  a        =  5</em>
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In a Gallup poll, 1025 randomly selected adults were surveyed and 29% of them said that they used the Internet for shopping at l
svetoff [14.1K]

Answer:   (0.25,0.33)

Step-by-step explanation:

A 99% confidence interval for population proportion is given by:-

\hat{p}\pm 2.576\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}, where \hat{p} = sample proportion, n = sample size.

Given: n=1025, \hat{p}=0.29

A 99% confidence interval estimate of the proportion of adults who use the Internet for shopping:

0.29\pm 2.576\sqrt{\dfrac{0.29(1-0.29)}{1025}}\\\\=0.29\pm 2.576\sqrt{0.00020087804878}\\\\=0.29\pm2.576(0.01417)\\\\=0.29\pm0.03650192\\\\=(0.29-0.03650192,\ 0.29+0.03650192)\\\\=(0.25349808,\ 0.32650192)

\approx(0.25,\ 0.33)

Thus, a 99% confidence interval estimate of the proportion of adults who use the Internet for shopping = (0.25,0.33)

5 0
3 years ago
What elements of a rectangular prism are needed to find its volume?
Dmitry_Shevchenko [17]

Answer:

Height Length And Width

Step-by-step explanation:

The formula for the volume of a retangular prisim is Volume=Length x Width x Height

7 0
1 year ago
Read 2 more answers
Find the quotient: 18,198 / 27 518 608 674 689
gregori [183]
18,198 / 27 = 674 <==
5 0
2 years ago
Could anyone find this?
lina2011 [118]

Answer:

Step-by-step explanation:

Since the squares have areas of 32u^2. The side lengths are

s=\sqrt{32}\\ \\ \text{By the Pythagorean Theorem}\\ \\ x^2=s^2+s^2\\ \\ x^2=32+32\\ \\ x^2=64\\ \\ x=\sqrt{64}\\ \\ x=8

8 0
2 years ago
Please help ASAP really need this
Aleonysh [2.5K]

Answer:

21.79 + c \leq 25

Joshua can spend up to 3.21 on a card.

Step-by-step explanation:

21.79 + c \leq 25 is the correct equation because Joshua is spending 21.79 on flowers, a certain amount on the card, and the maximum he can spend is 25. That is why you use the less than or equal to sign.

To solve, first subtract 21.79 from both sides to get: c \leq 3.21. This means that Joshua can spend up to 3.21 on a card.

Hope it helps!

3 0
3 years ago
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