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Lilit [14]
3 years ago
5

(5r+7)(5r-7) *Multiplying Polynomials

Mathematics
2 answers:
Stella [2.4K]3 years ago
8 0

Answer:

25r^2−49

Step-by-step explanation:

5r+7)(5r+−7)

=(5r)(5r)+(5r)(−7)+(7)(5r)+(7)(−7)

=25r^2−35r+35r−49

=25r^2−49

suter [353]3 years ago
8 0
Simplify the product
(5r + 7) x (5r - 7)

rewrite & evaluate the power
(5r)^ - 7^


final answer: 25r^ - 49
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Express the ratio in the simplest form. 20 gallons to 0.75 gallons
expeople1 [14]

ANSWER

The ratio in the simplified form is

80:3

EXPLANATION

We want to express 20 gallons to 0.75 gallons as a ratio in its simplest form.

We obtain the ratio as follows:

20:0.75

This is the same as

20: \frac{3}{4}

We multiply each term in the ratio by 4 to obtain;

20 \times 4:0.75 \times 4

This gives us,

80:3

5 0
2 years ago
Plz help I need help plz
dem82 [27]
Answer:

33/4 or 8 1/4

Step-by-step explanation:

-3 2/3 • (-2 1/4)

Step 1. Convert each into improper fractions
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-11/3 • (-9/4)

Step 2. Multiply
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99/12

Step 3. Simplify
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33/4 or 8 1/4
4 0
3 years ago
What are the steps to graphing a linear equation?
chubhunter [2.5K]

Locate the y-intercept on the graph and plot the point.

From this point, use the slope to find a second point and plot it.

Draw the line that connects the two points.

6 0
2 years ago
Read 2 more answers
Write an equation that is non-proportional.
elena-s [515]

Answer:

y = mx + b. When b ≠ 0, the relationship between x and y is nonproportional.

7 0
2 years ago
you work from 7:00 am to 11:00 am and from 12:00pm to 4:00 pm. your hourly rate is $7.50. You do not work overtime. Find the hou
Viktor [21]

Answer:

Worked 40 hrs in week

Pay $300 for week

Step-by-step explanation:

Hours: 7-11a.m = 4

12-4p.m = 4 So, 4+4=8 hrs per day

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Worked 40 hrs in week

Pay: $7.50/hr So, $7.50×40 hrs (7.50×40)=300

So, $300 pay for week

7 0
3 years ago
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