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3 years ago

PLEASE HELP!! I WILL GIVE BRAINLIEST

Mathematics

2 answers:

sattari [20]3 years ago

7 0

Answer: (a) The rate that the point 8,28 represents is 3.5 cm/s since 28/8 = 3.5

(b) The unit rate is 3.5 cm/s since the rate is constant.

(c) The two points lie on the same line and that both points results to a rate of 3.5 cm/s.

Step-by-step explanation:

slavikrds [6]3 years ago

4 0

Answer:

Step-by-step explanation:

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What is the slope of the line NP

Luba_88 [7]

Answer:

The slope of NP is $\frac{-5}{7}$ ⇒ B

Step-by-step explanation:

In any square, every two opposite sides are parallel and every two consecutive sides are perpendicular

Parallel lines have the same slope

The product of the slopes of the perpendicular lines is -1, which means if the slope of one m, then the slope of the other is $\frac{-1}{m}$ (reciprocal m and change its sign)

The rule of the slope of the line which passes through the points (x1, y1) and (x2, y2) is m = $\frac{y2-y1}{x2-x1}$

In square MNPR

∵ MN and NP are adjacent sides

∴ MN ⊥ NP

∵ M = (3, 8) and N = (-2, 1)

∴ x1 = 3 and y1 = 8

∴ x2 = -2 and y2 = 1

→ Use the rule of the slope above to find the slope of MN

∴ m(MN) = $\frac{1-8}{-2-3}$

∴ m(MN) = $\frac{-7}{-5}$

∴ m(MN) = $\frac{7}{5}$

∵ MN ⊥ NP

∴ The product of their slopes = -1

→ Reciprocal the slope of MN and change its sign

∴ m(NP) = $\frac{-5}{7}$

∴ The slope of NP is $\frac{-5}{7}$

8 0

3 years ago

A triangle has side lengths of 21, 27, and 35 inches. Is it<br> right triangle?

DIA [1.3K]

Answer: No
In right triangle we have 30:60:90
and the ratios are
x: x root of 3: 2x
so, for example, if we have side of length 3 against 30 degrees, then against 60 degrees the side will be 3 root of 3, and against 90 degrees it will be 6.
Hope it helps!

3 0

2 years ago

How do you find the median and standard deviation for 3,3,3,3,4,4,4,4,4,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,8,8,8,8,8,

Rashid [163]

Answer:

Median is 6

standard deviation is 2.39

Step-by-step explanation:

the median is the mid number in the data set

The median formula is {(n + 1) ÷ 2}th, where “n” is the number of items in the set and “th” just means the (n)th number.

There are 51 data points in this set (n = 51)

so 51 / 2 = 25.5, the. number in the 25th slot is our median

3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6,<u> 6</u>, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11

the standard deviation is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.

7 0

2 years ago

What is interest earned on 3500 invested at 6% compounded quarterly or 12 years

enyata [817]

$\bf \qquad \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+\frac{r}{n}\right)^{nt}
\quad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\to &\$3500\\
r=rate\to 6\%\to \frac{6}{100}\to &0.06\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{quarterly, thus four}
\end{array}\to &4\\
t=years\to &12
\end{cases}
\\\\\\
A=3500\left(1+\frac{0.06}{4}\right)^{4\cdot 12}\implies A=3500(1.015)^{48}$

so, the interest earned then will be A - 3500.

6 0

3 years ago

I need help please help me.

d1i1m1o1n [39]

Answer:eu noa

Step-by-step explanation:falo inglês

3 0

3 years ago

Read 2 more answers