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4 years ago

Answer each question about the following

Mathematics

2 answers:

Softa [21]4 years ago

4 0

Answer:

What is the value of the arithmetic series?

S4=78

Step-by-step explanation:

DIA [1.3K]4 years ago

3 0

Answer:

s=7/9

i hope this help

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Please help need to finish ASAP

jok3333 [9.3K]

Look at the picture.

The triangle ADC and the triangle CDB are similar.

Therefore corresponding sides are all in the same proportion:

$\dfrac{y}{4}=\dfrac{12}{y}\ \ \ \ |cross\ multiply\\\\y^2=48\to y=\sqrt{48}\\\\y=\sqrt{16\cdot3}\\\\y=\sqrt{16}\cdot\sqrt3\\\\y=4\sqrt3$

Answer: 4√3

3 0

3 years ago

Magda saw a triangular sign with a base of 4 feet and a height of 2.8 feet. She reasoned that if she first divided each dimensio

motikmotik

Answer: She is not correct, because she must multiply the base and the height of the triangle and then divide by 2.

Step-by-step explanation:

1. The formula for calculate the area of a triangle is shown below:

$A=\frac{b*h}{2}$

Where $b$ is the base and $h$ is the height.

2. Then, if she applied the method she reasoned, she'd obtain the following area:

$b=\frac{4ft}{2}=2ft\\h=\frac{2.8ft}{2}=1.4ft\\A=2ft*1.4ft\\A=2.8ft^{2}$

3. But actually, Magda should multiply the base and the height of the triangle and then divide by 2. Then, the correct area is:

$A=\frac{4ft*2.8ft}{2}=5.6ft^{2}$

8 0

4 years ago

Read 2 more answers

Round each number to the nearest ten. What is the best estimate for the answer to 343.42 – 39.87?

Nikolay [14]

So I would round it to 340 and 40 because if the number is lower than 5 than take it DOWN to the nearest ten if it's five or above take UP to the nearest ten

Hope it helped you

7 0

4 years ago

Round 24 3/7up to the nearest whole number

tatyana61 [14]

Answer:

Step-by-step explanation:

I hope this helps, and have a great day! :D

7 0

4 years ago

Read 2 more answers

Write a recursive formula for the sequence 9,1,-7,-15

Svetach [21]

Two fractions are called equivalent if they have the same numeric value. ... To calculate equivalent fraction , multiply the Numerator of each fraction, by its respective Multiplier. ... Combine the numerators together, put the sum or difference over the common denominator then reduce to ...

8 0

3 years ago