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3 years ago

Can you help me with question 8,9,10,14 please

Mathematics

1 answer:

marishachu [46]3 years ago

7 0

#8 is correct

#9 is wrong

Answer :

${ - 2x}^{2} - 8x$

#10 is correct

#14 is correct I think.

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If a table and a bench is $1000 combined. The cost of the table is three times the cost of the bench. What is the cost of the be

attashe74 [19]

1,000= 3x+x. 1,000=4x. 250=x. 1,000= 3(250) +250. 1,000=750+250. The bench costs $250.

5 0

2 years ago

An arc with length 5 pi over 4 inches is formed by a 15 degree central angle what is the radius of the circle

Natalka [10]

Answer:

Radius of the circle is 15 inches.

Step-by-step explanation:

Relation between length of arc, radius and the angle subtended by the arc on center is:

$\theta = \dfrac{l}{r} ..... (1)$

where $\theta$ is the central angle in radians subtended by arc

$l$ is the length of arc

$r$ is the radius of arc

We are Given the following details:

$l = \dfrac{5\pi}{4}\ inch$

$\theta = 15^\circ$

We know that $\pi \ radians = 180 ^\circ$

Converting $\theta$ to radians:

$\theta =\dfrac{\pi}{180} \times 15$ radians

Putting the values of $\theta$ and $l$ to find the value of $r$

$\dfrac{\pi}{180} \times 15 = \dfrac{5\pi}{4r}\\\Rightarrow r = \dfrac{45}{3} \\\Rightarrow r = 15 \ inches$

Hence, Radius of the circle is 15 inches.

6 0

2 years ago

12.8 х 5.3 find the value of x

Eddi Din [679]

Answer:

67.84 is the answer.

Step-by-step explanation:

12.8 times 5.3 equals 67.84

#teamtrees #WAP (Water And Plant)

8 0

2 years ago

At 6 a.m. the temperature was 18oF. By noon it had risen to 36oF. A student claimed that it was then "twice as warm" as it was a

mart [117]

Yes, 18 x 2 + 36, therefore the student was correct

4 0

2 years ago

Read 2 more answers

Please help I will give you brainliest put the right answer.

sladkih [1.3K]

Answer:

The answer is 104

Step-by-step explanation:

I’m guessing the shape is a triangle so if you have to angels you add them up and minus then from 180 what you get is your missing angle.

3 0

2 years ago