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3 years ago

4x + 15 - 3x + 10 simpllify the expression pleas give answer and how to do it

Mathematics

1 answer:

dexar [7]3 years ago

8 0

Answer:

x + 25

Step-by-step explanation:

First, group terms that are similar:

4x - 3x + 15 + 10

Next subtract the similar terms:

4x - 3x = 1x

Simplify 1x:

1x = x

Add the other numbers:

15 + 10 = 25

Final product:

x + 25

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Write a formula for a Riemann sum for the function f (x )equals 1089 minus x squared over the interval [0,33].

Mashcka [7]

Answer:

Area of 23958

Step-by-step explanation:

The Riemann sum is just the divide of a area into smaller areas and computing the sum of those areas. It is basically the integral of a function over an interval.

$\int\limits {1089-x^2} \, dx$

over the interval [0,33].

$\int\limits {1089-x^2} \, dx=1089x-(x^3)/3$

evaluate

$=0-1089\cdot{33}-(33^3)/3=35937-11979=23958$

4 0

3 years ago

Started: Apr 15 at 10:12am

amm1812

Could you explain better

3 0

3 years ago

Which of the following pairs could be reasonable approximations for the diameter and circumference of a circle? 18 inches and 57

chubhunter [2.5K]

Answer:

18 inches and 57 inches

Step-by-step explanation:

The diameter and the circumference of a circle are proportionate to each other.

The circumference of a circle will always be the diameter times $\pi$ . We know this because the circumference of a circle is represented as

$2 \pi r$

Since the diameter is twice the radius, we multiply the radius by 2 - there's already a $\cdot 2$ in this equation, so $c = \pi d$ .

1st option: $18\cdot3.14 = 56.52$ , this is close to 57 so it's reasonable.

2nd option: $3\cdot 3.14 = 9.42$ , this isn't close to 28 at all.

3rd option: $33 \cdot 3.14 = 103.62$ , this isn't close to 80 at all.

So the 1st option is reasonable.

Hope this helped!

5 0

3 years ago

Read 2 more answers

Complete the sentence.<br> 9 is 36% of ??

Olegator [25]

Answer:

Step-by-step explanation:

Ratios:

$\frac{36}{100} =\frac{9}{x} \\\\36x=900\\x=25$

Double check:

25(0.36) = 9

3 0

3 years ago

A company sells boxes of cow bells (b) for $20 and boxes of air horns (h) for $30. They can make a batch of cow bells that fills

OLga [1]

20b + 30h = 275

8b + 9h = 53

8 0

3 years ago