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Zinaida [17]
3 years ago
9

Will mark Brainlyest!

Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
4 0

Answer:

b and c

Step-by-step explanation:

Lena [83]3 years ago
3 0

Answer:

a

Step-by-step explanation:

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Whats 3(x + 2) = 21?<br>show work please !!​
dybincka [34]

Answer:

x=5

Step-by-step explanation:

3(x+2)=21

3x+6=21

3x+6-6=21-6\\\\3x=15\\\\\frac{3x}{3}  = \frac{15}{3} \\\\x=5

5 0
3 years ago
Read 2 more answers
Find the approximate circumference of a circle with a diameter of 100 yards.
elixir [45]

Answer:

D. 314 yds

Step-by-step explanation:

Given:

Diameter = 100 yds

Required;

Circumference of the circle

Solution:

Circumference of circle = πd

Plug in the value

Circumference = π × 100

= 314 yds (nearest whole number)

5 0
3 years ago
If alvin sold 60% of his baseball cards, gave away 30% of those that were left, and still had 40 baseball cards in his possessio
kipiarov [429]

Answer:

The number of baseball card to begin with is 143

Step-by-step explanation:

Let The number of baseball cards = x

The number of sold baseball card = 60% of x

                                                         = 0.6 x

The number of left baseball card = x - 0.6 x = 0.4 x

The number of card gave away = 30 % of left cards

                                                     = 0.3 × 0.4 x = 0.12 x

The number of card left in his possession = 40

So, 0.6 x + 0.12 x + 40 = x

Or,  40 = x - 0.6 x - 0.12 x

Or,  40 = 0.28 x

∴   x = \frac{40}{0.28}  =  142.85 ≈ 143

Hence The number of baseball card to begin with is 143  Answer

3 0
3 years ago
75 percent of what number is 54
Olin [163]
Ok, this is simple. First put 54 over X in a fraction. 54/x Then put 75 over 100. 75/100 Then you cross multiply. 75(x)= 54(100) Simplify. 75x = 5400 Divide. x=72 Your answer is 72
Hope this helps :)

6 0
3 years ago
Read 2 more answers
Nick can type 30 words a minute.<br> How many words can be typed in 9.5 minutes?
Elza [17]

Answer:

285 words

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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