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2 years ago

The sum of two numbers is 12, and their difference is 17. What are the numbers.

Mathematics

1 answer:

Mekhanik [1.2K]2 years ago

7 0

Answer:

14.5 and -2.5

Step-by-step explanation:

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Plz help it’s 7th grade math

Anna71 [15]

Divide the miles already drove by 7 cause thats every 15 minutes what would be drove so mutiply that by 4 and get 68.57 >> 68.6 miles per hour !

6 0

3 years ago

From the earth, the moon subtends an angle of approximately 0.5°. If the distance to the moon is approximately 240,000 miles, fi

konstantin123 [22]

Answer:

2100 miles.

Step-by-step explanation:

Given:

Diameter to the moon = 240000 miles

∅ = 0.5 °

The subtended angle by an arc is given as:

S = r∅

Where

r = radius of the circle

Therefore,

D = 240,000 x (0.5 x π rads)/180

= 2094 miles

= 2100 miles.

6 0

3 years ago

Factor a number, variable, or expression out of the polynomial shown below.

katen-ka-za [31]

Your answer is B.

Just take what is being multiplied by (10x-7) and put it together to get
(x+11)(10x-7)

Hope this helps :-)

8 0

3 years ago

A survey 50 randomly selected students showed that 38 students by lunch at school and 12 students bring lunch from home each day

masha68 [24]

12/50=24% of student bring lunch so 24%-524=398 student buy lunch out of 524

8 0

2 years ago

Ben walks 25 miles from home to work. If he walks the first 5 miles in 1 hour, the second 5 miles in 1.4 hours, the third 5 mile

natka813 [3]

<u>Answer:</u>

The total time taken to complete 25 miles is 7.6 hours.

Solution:

Ben walks 5 miles in 1 hour,

Second 5 miles in 1.4 hours,

Third 5 miles in 1.7 hours,

Last 5 miles in 1.8 hours

So he walked total 20 miles in (1+1.4+1.7+1.8) hours = 5.9 hours = 6 hours (approximately)

So his average speed is $\left(\frac{20}{6}\right)$ miles/hours = 3.33 miles/hours.

i.e. he travels 3.3 miles in 1 hour,

Then, he travels 1 miles in $\left(\frac{1}{3.3}\right)$ hours

Hence the total time he will take to walk 25 miles is $\left(25 \times\left(\frac{1}{3.3}\right)\right) \text { hours }$ $\Rightarrow \left(\frac{25}{3.3}\right) \text { hours } = 7.5757 hours$

That is approximately 7.57 or 7.6 hours.

8 0

2 years ago