3 years ago

Correct answer will get brainliest!

Mathematics

1 answer:

Natali5045456 [20]3 years ago

5 0

The answer would have to be 5

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Hope you can help me with this problem

liberstina [14]

Answer:

the answer is A

Step-by-step explanation:

casue i said so

7 0

2 years ago

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In an arithmetic series, what is the sum of the first 22 terms if the first term is 12 and the common difference is 3?

Vilka [71]

Answer:

561

Step-by-step explanation:

an = dn - (a-d)

The difference is 3.

The first term is 12.

an = 3n - (12-3)

an = 3n - 9

Put n as 1, 2, 3, 4, 5 ....22.

3(1) - 9 = -6

3(2) - 9 = -3

3(3) - 9 = 0

3(4) - 9 = 3

3(5) - 9 = 6

...

3(22) - 9 = 57

Add the first 22 terms.

-6+-3+0+3+6+9+12+15+18+21+24+27+30+33+36+39+42+45+48+51+54+57

= 561

4 0

3 years ago

An old house has a basement stairway that has steps with 7.25 inch vertical risers and 7 inch horizontal treads. What is the slo

svlad2 [7]

Answer:

1.04 inch

Step-by-step explanation:

Given: Old house has a basement stairways with 7.25 inch vertical riser and 7 inch horizontal treads.

Remember; horizontal treads is known as run in steps.

Now, calculating the slope of the stairways.

Formula: $Slope= \frac{Rise}{Run}$

Rise= 7.25 inch

Run= 7 inch.

Subtituting the value in the formula

Slope= $\frac{7.25}{7}= 1.0357 \approx 1.04$ (∵ Round to two decimal)

∴ Slope of stairways is 1.04.

4 0

3 years ago

a wheelchair ramp is 9 feet long and sits 2.5 ft high. how long will a similar ramp be if it sits 1.5 ft high from the ground

bixtya [17]

The second ramp should be 5.4 ft long

6 0

3 years ago

Solve the following equation by factoring: 9x^2 – 3x – 2 = 0

crimeas [40]

The answer is A. X=-1/3 or x=2/3

5 0

3 years ago

Read 2 more answers