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3 years ago

Higher Order Thinking Mike has

Mathematics

1 answer:

S_A_V [24]3 years ago

5 0

Answer:

Step-by-step explanation:

28+8=36

8+8=16

BOOM GOT A BRAIN lol

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Malik earned $2,344.55 fixing computers. He charged $35.50 per hour. Which expression does NOT use appropriate compatible number

meriva

Answer:

A, B , C do NOT use appropriate compatible numbers to estimate the total number of hours he worked.

Step-by-step explanation:

Malik earned $2,344.55

Wages per hour $ 35.50

No of hours = Total wages / wages per hour= $2,344.55/ 35.50 = 66.043

Lets analyze all the options

A. 2,400 ÷ 30= 80

B. 2,400 ÷ 40= 60

C. 2,000 ÷ 40= 50

D. 2,000 ÷ 30= 66.67

A, B , C do NOT use appropriate compatible numbers to estimate the total number of hours he worked.

Only D uses appropriate compatible numbers to estimate the total number of hours he worked.

8 0

3 years ago

What is the value of X to the nearest tenth? Answer options: 0.3, 14.4, 3.4

Nookie1986 [14]

Answer: x=14.4

Step-by-step explanation:

The triangle shown in the figure attache is a right triangle. Therefore, you can calculate the missing side "x" as following:

$tan\alpha=opposite/adjacent$

Where:

$\alpha=64\°\\opposite=x\\adjacent=7$

When you solve for x and substitute the values shown above, you obtain the following result:

$x=7*tan(64\°)\\x=14.35$

$x$ ≈ $14.4$

3 0

3 years ago

Read 2 more answers

How many solutions does the system have? 3x + y = 8 2 + 2y = 8

REY [17]

Answer:

x=2,y=2

Step-by-step explanation:

This question is a simultaneous equation

So let's solve

3x+y=8...(1)

2x+2y=8....(2)

Multiply (1) by 2

6x+2y=16...(3)

Substrate (2) From (3)

4x=8

Let's make x the subject of formula by dividing both sides by 4

x=2

So let's substitute the value of x into (1)

3x+y=8

3(2)+y=8

6+y=8

y=8-6

y=2

Therefore x is 2,y is 2

3 0

3 years ago

An increased number of colleges have been using online resources to research applicants. According to a study from last year, 3

Aneli [31]

Answer:

D. H0: p ≤0.36 H1: p>0.36

$$$(Right tail test) Z_{\alpha}=Z_{0.1}=1.28155$

$Z_p=-0.25516$

D. Reject H0. There is sufficient evidence to support the hypothesis that the proportion of admissions officers who visit an applying students' social networking page has increased in the past year

Step-by-step explanation:

To solve this problem, we run a hypothesis test about the population proportion.

$$$Sample proportion: $\bar P=0.47\\Sample size n=100$\\Significance level \alpha=0.10$\\(Left tail test) Z_{1-\alpha}=Z_{0.90}=-1.28155$\\(Right tail test) Z_{\alpha}=Z_{0.1}=1.28155$\\(Two-tailed test) $Z_{1-\alpha/2}=Z_{0.95}=-1.64485$ and $ Z_{\alpha/2}=Z_{0.05}=1.64485\\\\$

The appropriate hypothesis system for this situation is:

$H_0:\pi_0=0.35\\H_a:\pi_0 > 0.35\\\\$Proportion in the null hypothesis is:\\\pi_0=0.35\\\\$

$$$The test statistic is $Z=\frac{(\bar P-\pi_0)\sqrt{n}}{\sqrt{\pi_0(1-\pi_0)}}\\$The calculated statistic is Z_c=\frac{(0.47-0.35)\sqrt{100}}{\sqrt{0.35(1-0.35)}}=-0.25516\\p-value = P(Z \geq Z_c)=0.01620\\\\$

Since, the calculated statistic $Z_c$ is greater than critical $Z_{\alpha}$ , the null hypothesis should be rejected. There is enough statistical evidence to state that the proportion of admissions officers who visit an applying students' social networking page has increased in the past year.

5 0

3 years ago

Please I need answers for this!!

ANTONII [103]

Answer:

1. 8 bags

2 1 1/8

Step-by-step explanation:

7 0

3 years ago