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3 years ago

Please help with 1-6

Mathematics

2 answers:

Debora [2.8K]3 years ago

5 0

Answer:

1.) 3

2.) 5

3.) 4

4.) 10

5.) 9

6.) 7

kirill [66]3 years ago

5 0

Answer:

1.) 3

2.) 5

3.) 4

4.) 10

5.) 9

6.) 7

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It’s cost $3.75 to by 3/4 of a pound of walnuts.How many pounds of walnuts can your purchase with $11.25

nika2105 [10]

Answer:

9/4 pounds of walnut

Step-by-step explanation:

First we divide 11.25/3.75=3 so we would know how many 3/4 pounds are there. Then, we know there are 3-3/4 pounds of walnuts. Mulitply them, you will get 9/4

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2 years ago

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Work out the third term of the sequence with nth term 3(n+2).<br><br>

Anon25 [30]

Answer:

Step-by-step explanation:

n = 3

3(n + 2) = 3(3+2) = 3*5 = 15

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3 years ago

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In a random sample of 400 residents of Boston, 320 residents indicated that they voted for Obama in the last presidential electi

coldgirl [10]

Answer:

C.I = 0.7608 ≤ p ≤ 0.8392

Step-by-step explanation:

Given that:

Let consider a random sample n = 400 candidates where 320 residents indicated that they voted for Obama

probability $\hat p = \dfrac{320}{400}$

= 0.8

Level of significance ∝ = 100 -95%

= 5%

= 0.05

The objective is to develop a 95% confidence interval estimate for the proportion of all Boston residents who voted for Obama.

The confidence internal can be computed as:

$=\hat p \pm Z_{\alpha/2} \sqrt{\dfrac{ p(1-p)}{n } }$

where;

$Z_{0.05/2}$ = $Z_{0.025}$ = 1.960

SO;

$=0.8 \pm 1.960 \sqrt{\dfrac{ 0.8(1-0.8)}{400 } }$

$=0.8 \pm 1.960 \sqrt{\dfrac{ 0.8(0.2)}{400 } }$

$=0.8 \pm 1.960 \sqrt{\dfrac{ 0.16}{400 } }$

$=0.8 \pm 1.960 \sqrt{4 \times 10^{-4}}$

$=0.8 \pm 1.960 \times 0.02}$

$=0.8 \pm 0.0392$

= 0.8 - 0.0392 OR 0.8 + 0.0392

= 0.7608 OR 0.8392

Thus; C.I = 0.7608 ≤ p ≤ 0.8392

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3 years ago

What is the unit rate if there are 258 purple polka-dot pencils in 3 purple polka-dot purses?

stiks02 [169]

Unit rate means one. So the best way to solve this is using a proportion over one. If there are 258 pencils in 3 purses 258/3 then how many are in one purses x/1. Cross multiply next. 258/3 * x/1. You get 3x and 258. To get the x alone, divide both sides by three. Your answer is 86 pencils in one purse.

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3 years ago

Subtract:<br> (-9z-7) – 11z

umka2103 [35]

Answer: -20z-7

Step-by-step explanation:

(-9z-7) – 11z

−9z−7−11z

(-9z-11z)-7

-20z-7

Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great Valentines Day! :-)

- Cutiepatutie ☺❀❤

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3 years ago

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