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4 years ago

Match each word to the appropriate example using the expression 5a + 9b - 4.

Mathematics

2 answers:

Murrr4er [49]4 years ago

8 0

Answer: 4 is the coefficient, 5a and 9b are the constants

Step-by-step explanation:

nevsk [136]4 years ago

5 0

Answer:

9 is the coefficient

-4 is the constant

There are 3 terms in the expression.

Step-by-step explanation:

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Equivalent fractions are always larger than orginal fraction true or false?

ioda

The answer is false. They are the same

8 0

3 years ago

Find the circumference of the circles below. Round your answer to the nearest whole number. Use 3.14 for Pi.

Lisa [10]

Answer:

$\huge\boxed{1.\ C\approx38cm;\ 2.\ C\approx57ft;\ 3.\ C\approx50in.}$

Step-by-step explanation:

The formula of a circumference of a circle:

$C=2\pi r\\\\r-\text{radius}$

$1.\\r=6cm\\\\C=2\pi\cdot6=12\pi\\\\\pi\approx3.14\\\\C\approx12\cdot3.14=37.68\approx38(cm)\\\\2.\\r=9ft\\\\C=2\pi\cdot9=18\pi\\\\\pi\approx3.14\\\\C\approx18\cdot3.14=56.52\approx57(ft)\\\\3.\\2r=16in.\to r=8in.\\\\C=2\pi\cdot8=16\pi\\\\\pi\approx3.14\\\\C\approx16\cdot3.14=50.24\approx50(in.)$

8 0

3 years ago

It takes 2 1/3 hours to paint a wall. How long will it take to paint 7 walls at this rate?

boyakko [2]

Answer:

Hi! The correct answer is 49/2 as an improper fraction and 24 1/2 in mixed number form!

Step-by-step explanation:

<em><u>~If it takes 2 and 1/3 to paint 1 wall then that's the unit rate. Multiply the unit rate by the number of total walls and that's your answer~</u></em>

7 0

3 years ago

Help me plz need help

atroni [7]

Answer:

Concept: Area

$area = \pi {r}^{2}$
We are given area hence 78.5 square meters
We want the radius so we isolate
$78.5 = \pi {r}^{2}$
Isolate for r to get r= 4.99 or 5 square units approximately

4 0

3 years ago

Read 2 more answers