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3 years ago

Estimate by using compatible numbers.

Mathematics

1 answer:

lorasvet [3.4K]3 years ago

5 0

Answer:

LMF.AO Try D it's the most compatible number set

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The temperature outside in the morning was 15 degrees below zero. By lunchtime it was 25 degrees above zero. How many degreees d

denpristay [2]

15 degrees below zero = -15

25 degrees above zero = 25

25 + 15 = 40

It rose 40 degrees.

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3 years ago

A fruit bowl is shaped like half of a sphere. The radius of the bowl is 15cm. what is the volume of the bowl

Naya [18.7K]

Answer: 7065 cm

Step-by-step explanation:

Find the volume as the bowl was a whole sphere and then divide the volume found by two, to get the volume of half the sphere.

(4/3) * π*(r^3) ≈ 14130 cm

14130/2 ≈ 7065 cm

This is an approximated result using π = 3.14

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3 years ago

A fisherman can row upstream at 5mph and downstream at 10mph he started rowing upstream until he got tired and then rowed downst

AlekseyPX

We have been given that the upstream speed is $5 mph$ and the down stream speed is $10mph$ .

Let the fisherman traveled a distance of x miles.

The total time of the trip is 6 hours.

Relations between speed (s), time (t) and distance (d) is $s = \frac{d}{t}$

Hence, $t= \frac{d}{s}$

Time upstream + time downstream = 6

$\frac{x}{5} +\frac{x}{10} =6$

lcm = 10

$\frac{2x+x}{10} =6$

=> $\frac{3x}{10} =6$

Cross multiplying, $3x= 60$

x = 20 miles .. Answer.

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3 years ago

Please help me<br> solve (x+3) (x+7)

vodka [1.7K]

Step-by-step explanation:

Here, we'll need to multiply these two values together. I'll use the expansion formula, which goes as follows:

$(a+b)(c+d)$

Expand

$ac + ad + bc + bd$

Lets apply this to the following equation:

$(x+3) (x+7)$

Expand.

$(x*x) + (x * 7) + (3 * x) + (3 * 7)$

Simplify.

$(x^2) + (7x) + (3x) + (21)$

Remove parenthesis and add.

$x^2+10x+21$

Answer:

x^2+10x+21

5 0

2 years ago

4. ____________________ is an equation that states a relationship between one quantity and one or more other quantities. *

telo118 [61]

8. I think it’s parallel lines.

5 0

3 years ago