Someone please help me

Mathematics

1 answer:

Ganezh [65]2 years ago

8 0

I might be wrong in this one but I am certain to the right Is definitely -3. If I get it wrong can you tell me what I got wrong to improve from my mistakes. $4x^2-6x=2x(8x-3)$

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What is the length of the dotted line in the diagram below? Leave your answer in

a_sh-v [17]

The top is a triangle with sides 7 and 5.4 Use the Pythagorean theorem to find the 3rd length.

3rd sides = sqt(7^2 + 5^2( = sqrt(49+25) = sqrt(74)

This side is the base of the lower rectangle.

The dotted line is the hypotenuse of a right triangle.

Use the Pythagorean theorem to solve.

sqrt(10^2 + sqrt(74)^2) = sqrt(174)

The dotted line = sqrt(174)

8 0

1 year ago

You are competing in a race. The table shows the times from last year's race you want your time to be last year's median time wi

aleksandr82 [10.1K]

Answer:

$27\leq x \leq37$

Step-by-step explanation:

Let's arrange the numbers from least to greatest:

20, 25, 27, 28, 31, 32, 32, 38, 40, 40, 42, 48

The median is the "middle" number when arranged from least to greatest.

There are 12 numbers, so the middle number would be "average" of 6th and 7th terms.

6th term = 32

7th term = 32

Average = (32+32)/2 = 32

Hence, median = 32

Absolute deviation of 5 minutes means 5 minutes less or greater than the median, 32.

So, 32 - 5 = 27 & 32 + 5 = 37

Hence $27\leq x \leq37$

4 0

2 years ago

Jacob is going on a road trip across the country. He covers 10 miles in 15 minutes. He then spends 10 minutes buying gas and som

baherus [9]

Answer:

The distance traveled between 10 minutes and 15 minutes is increasing.

Step-by-step explanation:

Jacob is going on a road trip across the country. He covers 10 miles in 15 minutes.

Therefore, between the 10 minutes and 15 minutes, Jacob was in motion and if he covers 10 miles in 15 minutes with a constant speed, then Jacob will cover $\frac{10}{15} \times (15 - 10) = 3.33$ miles in that period.