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marusya05 [52]
3 years ago
15

Please help! first to answer is brainleist and 5 star! Please answer all!​

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
5 0
The answers are 1) B 2) B 3) A
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In a toy store, the ratio of the number of dolls to teddy bears is 6:7. If the store has 120 dolls, how many teddy bears are the
VMariaS [17]
Dolls : teddy bears
6 : 7

if 120 dolls are equal to 6 portions,
7 portions,
(120/6) * 7
140 teddy bears
6 0
3 years ago
The manufacturer of a laser printer reports the mean number of pages a cartridge will print before it needs replacing is 12,200.
Svetllana [295]

Answer:

14110

Step-by-step explanation:

Let x = number of pages ;

μ = 12200 ; σ = 820

Zscore = (x - μ) / s

Zscore = (x - 12200) / 820

Zcritical at 99% confidence, for a 1 - tail test is 2.33

Hence, Z at 99% = 2.33

Put Zscore = 2.33

Zscore = (x - 12200) / 820

2.33 = (x - 12200) / 820

2.33 * 820 = x - 12200

1910.6 = x - 12200

1910.6 + 12200 = x

x = 14110.6

x = 14111

The number of pages the manufacturer should advertise is 14,110

5 0
3 years ago
The area of a rectangle is 150 in². The ratio of the length to the width is 3:2. Find the length and the width.
kap26 [50]

Answer:

Width = 10 in

Length = 15 in

Step-by-step explanation:

L / W = 3 / 2

L = 3/2 W

L * W = 3/2 W *W = 3/2 W² = 150

w² = 150 * 2/3 = 100

W = 10 in

L = 15 in

8 0
3 years ago
Andy solve an equation as shown below. What error did Andy make?
bixtya [17]

Answer:

Step-by-step explanation:

Whatever you do to the left you must do to the right, he multiplied 12 but forgot to multiply the -4 on the left and the + 1 on the right by the number 12

3 0
3 years ago
What is meant by inertia​
jeka57 [31]

Answer:

Inertia is a tendency to do nothing or to remain unchanged.

It is a property of matter by which it continues in its existing state of rest or uniform motion in a straight line unless that state is changed by an external force.

7 0
3 years ago
Read 2 more answers
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