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1 year ago

Can someone help me with this please? :)))

Mathematics

2 answers:

Natali5045456 [20]1 year ago

7 0

Answer:

Step-by-step explanation:

86 is 98% of 87.755102040816 which rounded to the nearest whole number is 88.

noname [10]1 year ago

4 0

Answer:

88 questions

Step-by-step explanation:

Given :-

86 questions correct = grade of 98%

Solving :-

Let total problems be T
T x 49/50 = 86
T = 86 x 50 / 49
T = 86 x 1.02
T = 87.72
T = 88 questions

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15 times a number increased

Minchanka [31]

Answer:

Step-by-step explanation:

6 0

2 years ago

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<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B125%20%7D%20-%20%5Csqrt%7B180%7D%20%2B%20%5Csqrt%7B45%7D%20" id="TexFormula1" tit

Kobotan [32]

Answer:

2 $\sqrt{5}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Simplifying the radicals

$\sqrt{125}$ = $\sqrt{25(5)}$ = $\sqrt{25}$ × $\sqrt{5}$ = 5 $\sqrt{5}$

$\sqrt{180}$ = $\sqrt{36(5)}$ = $\sqrt{36}$ × $\sqrt{5}$ = 6 $\sqrt{5}$

$\sqrt{45}$ = $\sqrt{9(5)}$ = $\sqrt{9}$ × $\sqrt{5}$ = 3 $\sqrt{5}$

Thus

$\sqrt{125}$ - $\sqrt{180}$ + $\sqrt{45}$

= 5 $\sqrt{5}$ - 6 $\sqrt{5}$ + 3 $\sqrt{5}$

= 2 $\sqrt{5}$

3 0

2 years ago

At the end of April, Mandy told Bill that she has read 16 books this year and reads 2 books each month. Bill wants to catch up t

klemol [59]

Mandy Increases her books by 2 per month.
Bill increases his books by 4 per month.

Month Mandy Bill
May 18 4
June 20 8
July 22 12
August 24 16
Sept 26 20
Oct 28 24
Nov 30 28
Dec 32 32
At the end of December they will have read the same amount of books.

6 0

2 years ago

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Solve for k. (k)4+ 3= 14 k=

r-ruslan [8.4K]

Solving for "K" , got it! :)
I'll make it easier to solve

(k)4+3-14=?
? = 0

4(k)-11 = 0

Take off the '0' and the addition symbol so we can add from 11 on your sides

4(k) - 11
+11 +11
---- ----
15k. 22
⬆ This would be your answer for k

4(k) = 11
÷4 ÷4
--- ----
1K ?

K = 11/4 (for fraction)
K = 2.75 (as a decimal)

5 0

2 years ago

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What is 0.8637 rounded to the nearest hundredth?

Wittaler [7]

Answer:

0.87

Step-by-step explanation:

3 0

2 years ago

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Can someone help me with this please? :)))​

Can someone help me with this please? :)))