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3 years ago

How do I solve this??

Mathematics

2 answers:

Svet_ta [14]3 years ago

5 0

Answer:

i guess you multiply 3and 30good lu8ck

Step-by-step explanation:

ddd [48]3 years ago

3 0

Answer:

3x+30=90 complementary

3x=90-30

x=60/3=20

x=20° is your answer

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Suppose that the functions q and r are defined as follows.

satela [25.4K]

Answer:

(r o g)(2) = 4

(q o r)(2) = 14

Step-by-step explanation:

Given

$g(x) = x^2 + 5$

$r(x) = \sqrt{x + 7}$

Solving (a): (r o q)(2)

In function:

(r o g)(x) = r(g(x))

So, first we calculate g(2)

$g(x) = x^2 + 5$

$g(2) = 2^2 + 5$

$g(2) = 4 + 5$

$g(2) = 9$

Next, we calculate r(g(2))

Substitute 9 for g(2)in r(g(2))

r(q(2)) = r(9)

This gives:

$r(x) = \sqrt{x + 7}$

$r(9) = \sqrt{9 +7{$

$r(9) = \sqrt{16}$ {

$r(9) = 4$

Hence:

(r o g)(2) = 4

Solving (b): (q o r)(2)

So, first we calculate r(2)

$r(x) = \sqrt{x + 7}$

$r(2) = \sqrt{2 + 7}$

$r(2) = \sqrt{9}$

$r(2) = 3$

Next, we calculate g(r(2))

Substitute 3 for r(2)in g(r(2))

g(r(2)) = g(3)

$g(x) = x^2 + 5$

$g(3) = 3^2 + 5$

$g(3) = 9 + 5$

$g(3) = 14$

Hence:

(q o r)(2) = 14

8 0

3 years ago

I think of a number, add 3 to it and multiply the result by 7.

Alla [95]

Answer:

$7(x + 3)$

Step-by-step explanation

thinked number = x

add 3 = +3

$x + 3$

multiply the result by 7

 $7( x+ 3)$ 

hope this helps

brainliest appreciated

good luck! have a nice day!

6 0

4 years ago

Subtract: (4n + 7) - (7n - 8)

Furkat [3]

4n+7−(7n−8)

=4n+7+−1(7n−8)

=4n+7+−1(7n)+(−1)(−8)

=4n+7+−7n+8

Combine Like Terms

=4n+7+−7n+8

=(4n+−7n)+(7+8)

=−3n+15

4 0

3 years ago

I’m confused on this one

Lorico [155]

The question is asking which of the following does not have side that are parallel. So which of them have lines that would never touch if they were never ending lines.

4 0

3 years ago

If QRST is a rectangle with QT = 30 and RS = 4x + 10, find x.

ArbitrLikvidat [17]

The opposite side pairs in a rectangle are congruent, so basically QT would be congruent to RS when you draw the rectangle and label the points.
4x+10=30
4x=20
x=5

4 0

3 years ago