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3 years ago

3(4-y)+4y=8 what is anwer

Mathematics

1 answer:

SOVA2 [1]3 years ago

4 0

Answer: y=-4

Step-by-step explanation:

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20 men decided to complete a work in 30 days. but after 6 days 8 men left now in how many day the work will be completed

Serga [27]

First, we convert it into a unit like this

20 workers × 30 days = 600 units work

After leaving the 5 workers, we have 35 days to complete the work.

In 35 days only 15 workers will do the work.

So the work completed in 35 days by 15 workers = 35 ×15 =525 units

Remaining unit = 600 -525 =75 units

This unit would do by 5 workers in (75/5) = 15 days.

So after 15 days, 5 workers should leave the job.

6 0

3 years ago

Please Help Asap Please And Thank You!

masha68 [24]

Answer:

Rate of change: 4/3

Step-by-step explanation:

Number of sodas/Total cost

pick a number

24/18 = 4/3

7 0

2 years ago

Read 2 more answers

JUUL Practice & Problem Solving 7.4.PS-10 Question Help Find the area of the polygon in square units. 4 2 e - 8 -6 - 4 - 2 4

V125BC [204]

area formula is

$A=\frac{1}{2}(b1+b2)h$

where:

b1 = small base

b2 = large base

h = height

then solve:

$A=\frac{1}{2}(2+6)3=\frac{1}{2}(8)3=\frac{24}{2}=12$

asnwer: 12 square units

7 0

1 year ago

(a) Find the size of each of two samples (assume that they are of equal size) needed to estimate the difference between the prop

zalisa [80]

Answer:

(a) The sample sizes are 6787.

(b) The sample sizes are 6666.

Step-by-step explanation:

(a)

The information provided is:

Confidence level = 98%

MOE = 0.02

n₁ = n₂ = n

$\hat p_{1} = \hat p_{2} = \hat p = 0.50\ (\text{Assume})$

Compute the sample sizes as follows:

$MOE=z_{\alpha/2}\times\sqrt{\frac{2\times\hat p(1-\hat p)}{n}$

$n=\frac{2\times\hat p(1-\hat p)\times (z_{\alpha/2})^{2}}{MOE^{2}}$

$=\frac{2\times0.50(1-0.50)\times (2.33)^{2}}{0.02^{2}}\\\\=6786.125\\\\\approx 6787$

Thus, the sample sizes are 6787.

(b)

Now it is provided that:

$\hat p_{1}=0.45\\\hat p_{2}=0.58$

Compute the sample size as follows:

$MOE=z_{\alpha/2}\times\sqrt{\frac{\hat p_{1}(1-\hat p_{1})+\hat p_{2}(1-\hat p_{2})}{n}$

$n=\frac{(z_{\alpha/2})^{2}\times [\hat p_{1}(1-\hat p_{1})+\hat p_{2}(1-\hat p_{2})]}{MOE^{2}}$

$=\frac{2.33^{2}\times [0.45(1-0.45)+0.58(1-0.58)]}{0.02^{2}}\\\\=6665.331975\\\\\approx 6666$

Thus, the sample sizes are 6666.

7 0

2 years ago

Which graphs show continuous data?<br><br> Select each correct answer.

love history [14]

C

Due to the fact that it is starting from 0 and moving in a steady pattern

5 0

3 years ago

Read 2 more answers