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3 years ago

Angles. If m and m measures of both angles. K =

Mathematics

2 answers:

olya-2409 [2.1K]3 years ago

6 0

Step-by-step explanation:

Bing dad beans Finke little

Otrada [13]3 years ago

4 0

Answer:

105 degrees

Step-by-step explanation:

If j and k are vertical, then they are equal. So, the first progression is to set both angles equal to each other.

3x+21=5x-35

and solve for x

21=2x-35

56=2x

x=28

then plug x back into either equation (since they are equal you just need to find one)

3(28)+21 = 105

So, the angle of k or j is 105 degrees.

k = 105

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Find (12x+12)−(−5x+8). step by step answers please.

Bas_tet [7]

Answer:

Step-by-step explanation:

First add 5x to 12x which becomes 17x and subtract 8 from 12 which becomes 4. So the answer is 17x+4!

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3 years ago

2. Jae creates a foot path in her front yard with two

aliina [53]

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Step-by-step explanation:

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3 years ago

If you are asked to find 621 / 59 how do you know the quotient will be greater than 10 before you actually divide?

vova2212 [387]

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3 years ago

The altitude (i.e., height) of a triangle is increasing at a rate of 2 cm/minute while the area of the triangle is increasing at

aksik [14]

The formula for the area of a triangle is
$A=\frac{1}{2}bh$
$\rightarrow\frac{dA}{dt}=\frac{1}{2}(b\frac{dh}{dt}+h\frac{db}{dt})$

We are given:
$\frac{dh}{dt}=2$
$\frac{dA}{dt}=4.5$
$h=9.5$
$A=92$

Plug in:
$4.5=\frac{1}{2}(b*2+9.5\frac{db}{dt})$
We can find $b$ with:
$A=\frac{1}{2}bh\rightarrowb=\frac{2A}{h}=\frac{2*92}{9.5}=\frac{184}{9.5}$
So $4.5=\frac{1}{2}(2*\frac{184}{9.5}+9.5\frac{db}{dt})$
$\rightarrow9=\frac{368}{9.5}+9.5\frac{db}{dt}$
$\rightarrow9-\frac{368}{9.5}=9.5\frac{db}{dt}$
$\rightarrow\frac{db}{dt}=\frac{9-\frac{368}{9.5}}{9.5}\approx-3.130$

So the base is decreasing at a rate of 3.130 cm/minute.

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3 years ago

A news station would like to conduct an exit poll to determine the likelihood that a highly debated amendment will receive enoug

vladimir1956 [14]

Answer:

The expression is $n = (\frac{1.645*0.5}{0.03})^2$

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.