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3 years ago

15 -points helppppppppppppppppppppppppp

Mathematics

1 answer:

bonufazy [111]3 years ago

3 0

The answer is D

Explanation: take 25 and add them to the legs that you originally have.

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Can you please tel, me what is step 3

stepladder [879]

Answer below hope it helped

3 0

3 years ago

After several softball games Jenni has 12 hits and five walks what is the ratio of hits and walks select

vesna_86 [32]

12:5 I think is correct .

6 0

3 years ago

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Jenny opened a package of screws quickly and many of them spilled on the floor. She needs to organize the fasteners according to

hichkok12 [17]

We have to compare diameters and arrange them in order smallest to greatest

We can see units for option A and B are in square inches so they represents area. So first we will find diameter from area using formula

$A = \pi r^{2}$

so for choice (A) area is given as $4.375 \times 10^{7}$ . So plug this in A place in formula and then solve for radius r

$4.375 \times 10^{7} = \pi r^{2}$

$\frac{4.375 \times 10^{7}}{\pi} = \frac{\pi r^{2}}{\pi}$

$1.393 \times 10^{7} } = r^{2}$

$\sqrt{1.393 \times 10^{7}} = \sqrt{r^{2}}$

3731.76 = r

So screw A will have
$diameter = 2 \times r = 2 \times 3731.76 = 7463.52$ inches

Similarly for choice (E) area is $1.428 \times 10^{1} = 14.28$
so again plug in formula

$A = \pi r^{2}$

$14.28 = \pi r^{2}$

$\frac{14.28}{\pi} = \frac{\pi r^{2}}{\pi}$

$4.5477 = r^{2}$

$\sqrt{4.5477} = \sqrt{r^{2}}$

2.13201 = r

So screw E will have
$diameter = 2 \times r = 2 \times 2.13201 = 4.26402$ inches

So diameters of all screws are as follows:

Screw A: 7463.52 inches
Screw B: 1.5 inches
Screw C: $1\frac{7}{8} = \frac{1\times 8+7}{8} = \frac{15}{8} = 1.875$ inches
Screw D: 0.25 inches
Screw E: 4.26402 inches

Comparing all numbers 7463.52, 1.5, 1.875, 0.25, 4.26402 we can see that smallest number is 0.25, then comes 1.5, then 1.875 and then 4.26402 and then 7463.52

So order from least to greatest will be screw D (0.25), B(1.5), C(1.875), E (4.26402), A (7463.52).

So thats the order D,B,C,E,A and the final answer

6 0

4 years ago

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Three potential employees took an aptitude test. each person took a different version of the test. the scores are reported below

timama [110]

Answer:

Vincent and Reyna.

Step-by-step explanation:

As z-score indicates that a data point is how many standard deviation above mean, so to find which of three applicant should be offered the job, let us find the z-score for each person using z-score formula.

$z=\frac{x-\mu}{\sigma}$ , where,

$z$ = z-score,

$x$ = Random sample score,

$\mu$ = Mean,

$\sigma$ = Standard deviation.

$\text{z-score for Vincent}=\frac{83.5-68.2}{9}$

$\text{z-score for Vincent}=\frac{15.3}{9}$

$\text{z-score for Vincent}=1.7$

Therefore, Vincent's score on aptitude test is 1.7 standard deviation above mean.

$\text{z-score for Kaitlyn}=\frac{251.2-238}{22}$

$\text{z-score for Kaitlyn}=\frac{13.2}{22}$

$\text{z-score for Kaitlyn}=0.6$

Therefore, Kaitlyn's score on aptitude test is 0.6 standard deviation above mean.

$\text{z-score for Reyna}=\frac{8.04-7.2}{0.7}$

$\text{z-score for Reyna}=\frac{0.84}{0.7}$

$\text{z-score for Reyna}=1.2$

Therefore, Reyna's score on aptitude test is 1.2 standard deviation above mean.

Since Vincent and Reyna has higher z-scores, therefore, they are further above mean than Kaitlyn. Therefore, Vincent and Reyna should be offered the job.

7 0

3 years ago

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X +30=2X-4 solve x . .

MArishka [77]

Answer: X = 34

Step-by-step explanation:

Let's solve your equation step-by-step.

x+30=2x−4

Step 1: Subtract 2x from both sides.

x+30−2x=2x−4−2x

−x+30=−4

Step 2: Subtract 30 from both sides.

−x+30−30=−4−30

−x=−34

Step 3: Divide both sides by -1.

−x

−1

−34

−1

6 0

3 years ago

Read 2 more answers