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4 years ago

B. has 15 marbles and he got 123 more marbles add those two numbers and see what the number rounds to.

Mathematics

1 answer:

olganol [36]4 years ago

7 0

Answer:

100 if rounded to hundreds

140 if rounded to tens

Step-by-step explanation:

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Need help only on odds please

mars1129 [50]

Answer:

Step-by-step explanation:

1) (i) HG ≅ ST ; GI ≅ TR ; IH ≅ RS

ΔHGI ≅ ΔSTR by S S S congruent

(ii) ∠H ≅ ∠S ; HG ≅ ST ; ∠G ≅ ∠T

ΔHGI ≅ ΔSTR by A S A -> Angle Side Angle congruent.

3) LM ≅ XY ; MK ≅ YZ ; KL ≅ ZX

ΔLMK ≅ ΔXYZ Side Side Side congruent

∠K ≅ ∠Z ; KL ≅ ZX ; ∠L ≅ ∠X

ΔLMK ≅ ΔXYZ by Angle Side Angle congruent

8 0

3 years ago

What is 24 + 100 then times it by two is there more than 120

MatroZZZ [7]

24 + 100 is 124, and 124 x 2 = 248. So yes it is more than 120

7 0

4 years ago

Read 2 more answers

What is the unit rate of $120 15 books

Svetlanka [38]

I think its 8? someone correct me if im wrong.

3 0

3 years ago

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If sinA=√3-1/2√2,then prove that cos2A=√3/2 prove that

Ivan

Answer:

$\boxed{\sf cos2A =\dfrac{\sqrt3}{2}}$

Step-by-step explanation:

Here we are given that the value of sinA is √3-1/2√2 , and we need to prove that the value of cos2A is √3/2 .

Given :-

• $\sf\implies sinA =\dfrac{\sqrt3-1}{2\sqrt2}$

To Prove :-

• $\sf\implies cos2A =\dfrac{\sqrt3}{2}$

Proof :-

We know that ,

$\sf\implies cos2A = 1 - 2sin^2A$

Therefore , here substituting the value of sinA , we have ,

$\sf\implies cos2A = 1 - 2\bigg( \dfrac{\sqrt3-1}{2\sqrt2}\bigg)^2$

Simplify the whole square ,

$\sf\implies cos2A = 1 -2\times \dfrac{ 3 +1-2\sqrt3}{8}$

Add the numbers in numerator ,

$\sf\implies cos2A = 1-2\times \dfrac{4-2\sqrt3}{8}$

Multiply it by 2 ,

$\sf\implies cos2A = 1 - \dfrac{ 4-2\sqrt3}{4}$

Take out 2 common from the numerator ,

$\sf\implies cos2A = 1-\dfrac{2(2-\sqrt3)}{4}$

Simplify ,

$\sf\implies cos2A = 1 -\dfrac{ 2-\sqrt3}{2}$

Subtract the numbers ,

$\sf\implies cos2A = \dfrac{ 2-2+\sqrt3}{2}$

Simplify,

$\sf\implies \boxed{\pink{\sf cos2A =\dfrac{\sqrt3}{2}} }$

Hence Proved !

8 0

3 years ago

A copy machine makes 84 copies in 3 minutes and 30 seconds, how many copies does it make per minute.

matrenka [14]

Answer:

Step-by-step explanation:

3 minutes and 30 seconds = 3.5 minutes

84/3.5 = 24copies/minute

4 0

3 years ago

Read 2 more answers

B. has 15 marbles and he got 123 more marbles add those two numbers and see what the number rounds to.​

B. has 15 marbles and he got 123 more marbles add those two numbers and see what the number rounds to.