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Ainat [17]
3 years ago
13

Wich algebraic expression represents ”forty times a number”? 40+n 40n n-40 40/n

Mathematics
2 answers:
aalyn [17]3 years ago
7 0

Answer:

b its 40n second from top

Step-by-step explanation:

Reika [66]3 years ago
4 0
The answer to the problem is 40n
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A random sample of 65 high school seniors was selected from all high school seniors at a certain high school. The following scat
ladessa [460]

The residual value comes out to be 2.94 cm and height is 157.06 cm

<u>Explanation:</u>

The regression equation is calculated at the first step.

height = 105.08 plus 2.599 multiply foot length

At foot length = 20cm, height = 105.08 plus 2.599 multiply 20

= 157.06 cm

Residual = Actual minus predicted value = 160 minus 157.06

=2.94 cm

B) The residual standard deviation generally gives  a sense of the goodness of fit of goodness of regression equation on our data. The magnitude tells us that how much will be predicted values from model will vary from actual values. the linear model is justified.

5 0
3 years ago
the height of a cone is 16 cm and its base radius is 12 cm. find the curved surface area and the total surface area of the cone​
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Answer:

A≈1206.37 cm²

Step-by-step explanation:

Radius = 12

Height = 16

Using the formulas

A= πrl+πr²

l = √r²+h²

A=πr(r + √h²+r²)=

π·12·(12+√16²+12²) ≈1206.37158cm²

4 0
2 years ago
Read 2 more answers
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anyanavicka [17]

Answer:

9.100

9.10,00

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5 0
3 years ago
H(x)=5/sqrt(2x+10), find the domain using set builder notation.
marissa [1.9K]

The given expression is

h(x) = \frac{5}{\sqrt{2x+10}}

THe given expression is a rational expression, and rational expression should not have 0 in the denominator.

Moreover, the denominator is a square root term, and square root don't have a value for negative number .

Therefore 2x+10 must be greater then 0. That is

2x+10>0&#10;\\&#10;2x>-10&#10;\\&#10;x>-5

Therefore the required domain in set builder form is

{x | x>-5}

4 0
4 years ago
A type of bead weighs about 3/16 ounce. If a group of these beads weighs 4 1/8 ounces, how many beads are in the group?
Zinaida [17]
22
4 1/8=33/8=66/16
66/3=22
6 0
4 years ago
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