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Otrada [13]
3 years ago
14

What is the 78th term of the arithmetic sequence -4, -2, 0,

Mathematics
1 answer:
konstantin123 [22]3 years ago
7 0

Answer:

T78=150

Step-by-step explanation:

Tn=a+(n-1)d

T78=-4+(78-1)2

T78 =-4+(77)2

T78 =-4+154

T78=150

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Hajra's weekly pay this year is £676. This is 30% more than her weekly pay last year. Work out Hajra's weekly pay last year.
marissa [1.9K]
\text{new pay}=\frac{130}{100}(\text{old pay}) hence \text{old pay}=\frac{130}{100}\cdot676=\boxed{\£520}
3 0
3 years ago
A new sidewalk will be 4 feet​ wide, 240 feet​ long, and filled to a depth of 9 inches ​(0.75 ​foot) with concrete. How many cub
Drupady [299]

Answer: The number of cubic yards of concrete that are needed is 720.

Step-by-step explanation: The same formula for this type of shape stays the same: l*w*(h or d).

240 * 4 = 960

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3 0
3 years ago
1.5x + 1.3x = -8.4<br><br> I just wanted to make sure i got it right I got X = 42
Marianna [84]

Answer:

Hello there! I'm Ashlynn I'm always here to help!

___________________________________________

1.5x+1.3x

Combine 1.5x and 1.3x to get 2.8x.

(2.8x)

Subtract 1 from 1.

2.8x  

0

 

For any term t except 0, t  

0

=1.

2.8×1

For any term t, t×1=t and 1t=t.

2.8

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<em>“Let your unique awesomeness and positive energy inspire confidence in others.” </em>

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4 0
3 years ago
Triangle RST has sides measuring 22 inches and 13 inches and a perimeter of 50 inches. What is the area of triangle RST? Round t
VladimirAG [237]

Using the Heron's formula, the area of the triangle is: D. 95 square inches.

<h3>What is the Heron's Formula?</h3>

Area = √[s(s - a)(s - b)(s - c)] where s is half the perimeter, or (a + b + c)/2.

Given the following:

s = semi-perimeter = 1/2(50) = 25 in.

a = length of side a = 22 in.

b = length of side b = 13 in.

c = length of side c = 50 - 22 - 13 = 15 in.

Plug in the values

Area = √[25(25 - 22)(25 - 13)(25 - 15)]

Area = √[25(3)(12)(10)]

Area ≈ 95 square inches.

Learn more about the Heron's formula on:

brainly.com/question/10713495

#SPJ1

5 0
2 years ago
From sam’s house it is 6 2/5 miles to the beach and 4 3/7 miles to the ball park how much closer is his house to the ball park t
butalik [34]
His house is two miles closer to the ball park than the beach.

3 0
3 years ago
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