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ASHA 777 [7]
2 years ago
8

A rectangle has an area of 21x + 81 square units. If the width is 3 units, what is the length of the rectangle

Mathematics
1 answer:
rosijanka [135]2 years ago
6 0
If x=3 then the answer is 144
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ASAP HELP:The number of chapters read, y, after x days. The 5 slope of the line is and the y-intercept is 2. slope means... y-in
Rufina [12.5K]

Answer:

Step-by-step explanation:

The number of chapters read = y

Number of days spent to read = x

Slope of the line = \frac{5}{4} ≈ 1.25

y-intercept = 2

Slope means "number of pages read per day"

For slope = 1.25 means "1.25 pages read per day"

y-intercept means "Number of pages read initially"

y-intercept = 2 means "2 pages have been already read"

3 0
2 years ago
−7x−6y=2<br> 7x+4y=−6<br> solve for x and y
ikadub [295]

Answer:

\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:x=-2,\:y=2}

Step-by-step explanation:

\begin{bmatrix}-7x-6y=2\\ 7x+4y=-6\end{bmatrix}

\mathrm{Substitute\:}x=-\frac{2+6y}{7}

\begin{bmatrix}7\left(-\frac{2+6y}{7}\right)+4y=-6\end{bmatrix}

\begin{bmatrix}-2-2y=-6\end{bmatrix}

\mathrm{For\:}x=-\frac{2+6y}{7}

\mathrm{Substitute\:}y=2

x=-\frac{2+6\cdot \:2}{7}\\\\x=-2

5 0
2 years ago
Please help .......​
WITCHER [35]

f(n) = n² + 20

f(1) = 1² + 20 = 21

f(2) = 2² + 20 = 24

f(3) = 3² + 20 = 29

f(4) = 4² + 20 = 36

f(5) = 5² + 20 = 45

f(6) = 6² + 20 = 56

a) first three terms

Answer: 21, 24, 29

b) how many < 50

f(5)=45, f(6)=56 so

Answer: 5

7 0
3 years ago
Solve q + 1/7 = 1/5. Express your answer in the simplest form.
o-na [289]

Answer:

2/35

Step-by-step explanation:

original equation:q+1/7=1/5

subtract both sides by 1/7

q=1/5-1/7

q=2/35

(give me brainly pls)

4 0
3 years ago
Word form for 10 times 10 times 10 times 10 times 10
Volgvan
Ten to the power of five.
4 0
3 years ago
Read 2 more answers
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