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1 year ago

Grace's height is 1.45 m. Jackson is 0.2 m shorter than Grace. What is

Mathematics

1 answer:

s344n2d4d5 [400]1 year ago

6 0

By using the method subtraction, Jackson's height is 1.25m.

<h3>What is subtraction?</h3>

To subtract in mathematics is to take something away from a group or a number of objects. The group's total number of items decreases or becomes lower when we subtract from it. The components of a subtraction issue are the minuend, subtrahend, and difference. An arithmetic operation called subtraction simulates the process of deleting items from a collection. The action of subtracting a matrix, vector, or other quantity from another according to predetermined rules in order to find the difference.

Given that,

Grace's height is 1.45 m.

Jackson is 0.2 m shorter than Grace.

Jackson's height is 1.45 -0.2 = 1.25

Therefore, Jackson's height is 1.25m.

To know more about subtraction visit:

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LenaWriter [7]

Answer:

B. -6

Step-by-step explanation:

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3 years ago

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murzikaleks [220]

Get the denominator down to a one

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3 years ago

aleka has a box for keepsakes that has a volume of 576 cubic inches the length of the box is 12 in and the width is 8 in what is

Vikki [24]

We know that
volume of the box=length*width*height
V=L*W*H----> H=V/[L*W]
V=576 in³
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W=8 in
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H=576/[12*8]----> H=6 in

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5 0

3 years ago

Find the missing length of the triangle b 0.3 cm 0.5 cm

Juli2301 [7.4K]

Answer:

I'm assuming that it is a right angle triangle.

Step-by-step explanation:

0.3x0.5=0.15

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6 0

3 years ago

The average systolic blood pressure was found to be 140 mm for people who have high responsibility jobs, specifically investment

defon

Answer:

t = -1.428

Step-by-step explanation:

Average blood pressure among people with high responsibility jobs = u = 140 mm

Number of people sampled for the study = n = 51

Average blood pressure of the sample = x = 139 mm

Standard deviation of the sample = s = 5 mm

The claim is that practicing yoga decreases the blood pressure. So we have to test that after practicing yoga, the average blood pressure will be lesser than 140. Based on this we can formulate the null and alternate hypothesis as:

Null Hypothesis: $\mu \geq 140$

Alternate Hypothesis: $\mu < 140$

Since population standard deviation is not known, we cannot use z-distribution for this test. We are given the value of sample standard deviation, so t-test will be used for this case.

Test statistic is calculated as:

$t=\frac{x-u}{\frac{s}{\sqrt{n} } }$

Using the values in this formula gives us:

$t=\frac{139-140}{\frac{5}{\sqrt{51}}}\\\\ t=-1.428$

Therefore, the value of test statistic is -1.428

4 0

3 years ago