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3 years ago

Can someone help me in these questions please

Mathematics

1 answer:

Solnce55 [7]3 years ago

7 0

Answer:

5. 20/30, 8/12

6. 4/16, 14/56

7. 8/40, 4/20

8. 344/ 400, 215/ 250

hope this helps :)

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Im such a potato UwU ^-^

ludmilkaskok [199]

Answer:

then simply become a french fry lol

Step-by-step explanation:

8 0

3 years ago

A toy store worker packed two boxes of identical dolls and plush toys for shipping in boxes that weigh 1oz when empty. One box h

Vilka [71]

The total weight of 4 dolls and 3 plush toys is 11 oz

Let's say the dolls weigh 2 oz and the plush toys weigh 1 oz

2-4= 8 1x3 =3

8+3=11

Then 2 dolls =4 and 3 plush toys= 3

Weight should be 7oz

Plus the weight of the box 1

Total= 8 not 10

8 0

3 years ago

Layla emptied out her change jar to buy a new binder for school. She found 147 coins consisting of dimes and nickels that totale

den301095 [7]

Answer:

d + n = 147

0.10d + 0.05n = 11.65

d = 86, n = 61

Step-by-step explanation:

Let

Number of dimes = d

Number of nickels = n

Total coins = 147

Total value = $11.65

d + n = 147 (1)

0.10d + 0.05n = 11.65 (2)

From (1)

d = 147 - n

Substitute d = 147 - n into

0.10d + 0.05n = 11.65

0.10(147 - n) + 0.05n = 11.65

14.7 - 0.10n + 0.05n = 11.65

- 0.10n + 0.05n = 11.65 - 14.7

-0.05n = -3.05

n = -3.05 / -0.05

= 61

n = 61

Substitute n = 61 into

d + n = 147

d + 61 = 147

d = 147 - 61

d = 86

6 0

2 years ago

Find f(3) if<br> f(x)=x^3 + 2x^2-x-1

Wittaler [7]

Answer:

$\underline{ \boxed{f(3) = 41}}$

Step-by-step explanation:

$if \to \: f(x)=x^3 + 2x^2-x-1 \\ then \: f(3) = {3}^{3} + 2( {3)}^{2} - 3 - 1 \\ f(3) = 27 + 18 - 4 \\ f(3) = 41$

4 0

2 years ago

If 4 + 6 = 10, does (4 + 6) X 3= 10 X 3? Why or why not?

spayn [35]

Answer: Yes, they equal

Explanation: (4 + 6) x 3 = 30 ; 10 x 3 = 30, 30 = 30

3 0

2 years ago