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BabaBlast [244]
3 years ago
15

Help me, pleaseeeeee

Mathematics
1 answer:
fomenos3 years ago
8 0

Answer:

The answer is C and all the other options are incorrect.

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Actual lengths of pregnancy terms for a particular species of mammal are nearly normally distributed about a mean pregnancy leng
HACTEHA [7]

Solution :

The data is normally distributed.

The standard deviation is 18 days

Here the data is normally distributed and 54 days is 3 days of standard deviation.

Therefore, the percentage of the births that would be \text{expected to occur} within the 54 days of the mean \text{pregnancy} length is given by :

= P( -3 < Z < 3)

= 0.9544

= 95 %

Therefore, about 95% of the births would be \text{expected to occur} within 54 days of the men \text{pregnancy} length.

8 0
3 years ago
Write the slope-intercept form of the given line. Include your work in your final answer. Type your answer in the box provided o
kolbaska11 [484]
Answer: y = x -1

reasoning: the slope is 1 because the rise/run = 1/1, which simplifies to 1.
                 the y intercept is -1 because the line passes through the y axis at -1.

hope this helps!
8 0
3 years ago
Can someone simplify this equation and solve for x and y?<br> (2x-5)+(y-1)+x=169
goldenfox [79]

Answer:

Answer

2x+3y=14,2x−3y=2

Adding :

2x+3y=14

2x−3y=2

__________

4x=16

x=4

∴xy=4×2

=8

2×4+3y=14

8+3y=14

3y=6

y=2

Step-by-step explanation:

here you go

6 0
3 years ago
Read 2 more answers
The surface area of a ball is 3,600 square millimeters. What is the balls radius
allsm [11]
A = 4 \pi r^2

3600 = 4\pi r^2

\dfrac{3600}{4 \pi} = r^2

r^2 = 286.479

r = 16.9

Answer: The radius is 16.9 mm.
4 0
3 years ago
Simplify the following expression 5-⁵/2 x 5⁹/2
yarga [219]

Given:

Consider the given expression is

5^{-\frac{5}{2}}\times 5^{\frac{9}{2}}

To find:

The simplified form of the given expression.

Solution:

We have,

5^{-\frac{5}{2}}\times 5^{\frac{9}{2}}

Using properties of exponents, we get

=5^{-\frac{5}{2}+\frac{9}{2}}           [\because a^ma^n=a^{m+n}]

=5^{\frac{-5+9}{2}}

=5^{\frac{4}{2}}

=5^{2}

=25

Therefore, the simplified form of given expression is 25.

7 0
3 years ago
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