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Cerrena [4.2K]
3 years ago
8

State if each pair of ratios forms a proportion....EXPLAIN AS WELL PLS!!!

Mathematics
2 answers:
ss7ja [257]3 years ago
4 0

Answer:

1. 4/12 , 6/8

2. 16/12 , 3/4*

3. 3/2 , 15/14

4. 10/16 , 5/8

10/16 = 5/8

Which ratio forms a proportion with 9/15?

1. 6/10

2. 16/21

3. 36/50

4. 45/70

9/15 = 3/5 which is 6/10

A textbook weighs 2.5 pounds. How many kilograms does the textbook weighs? Round your answer to the nearest tenth of a pound. 1 kg = 2.2 lb

1. 1.1 kg

2. 1.8 kg

3. 5.5 kg

4. 4.7 kg

2.5 lbs * (1 kg/2.2 lbs) =

Solve the proportion using number sense. 2/8 = x/ 48

1. 6

2. 12

3. 16

4. 8

8 * 6 = 48

so what is 2 times 6 ?

or another way

1/4 * 48 = 12

Solve the proportion using cross products. 18/20 = k/110

1. 99

2. 122

3. 3.3

4. 2.9

20 k = 18*110

2 k = 18 *11

k = 9 * 11

Are the ratios 8/12 and 10/25 proportional? Explain

8/12 = 2/3

10/15 = 2/3 so no way 10/25 is 2/3

A 10-acre field produced 750 bushels of corn. At the rate, how much corn can be produced from a 14-acre field?

14 acres * ( 75 bushels/acre)

or

10/750 = 14/x

Step-by-step explanation:

hope this help and plz mark me a brainiest

jeka943 years ago
3 0
Multiply by the same number on each side.

1 no
2 no
3 no
4 no
5 yes
6 no
7 yes
8 yes
9 no
10 no
11 no
12 no

Hope this helps! ❤️
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Find the focus for y=x^2+4x-7
padilas [110]

ANSWER

(2,-10.75)

EXPLANATION

The given function is

y =  {x}^{2}  - 4x - 7

We rewrite this function to obtain,

(y + 11) =  {( x- 2)}^{2}

We now compare this function to

(y  -  k) = 4p {( x- h)}^{2}

We have

4p = 1

This implies that,

p =  \frac{1}{4}

The vertex is (2,-11).

The focus is

(2,-11+ \frac{1}{4} )

(2,- \frac{43}{4} )

(2,-10.75)

7 0
3 years ago
Shop Rite has jeans on sale for 3/10 off. Save More has jeans on sale for 33% off. Which store has a better deal? Explain.
umka21 [38]

save more has a better deal because when you convert 33% into a fraction out of ten it becomes 3.3/10 and shop right is 3/10 so 3.3 is greater than 3.

5 0
3 years ago
Determine the range of the following graph:
sergeinik [125]

Answer:

-7 < y < 2 (Line under <) is the answer

6 0
2 years ago
Paige use the equation y=kx to determine she would need 259 beads to create 7 necklaces. how many beads would she use per neckla
frozen [14]
Divide 259 by 7 (259/7)= 37 beads per necklace. If you wanted to check just multiply 7 and 37 (37x7)=259
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Which graph represents a linear function
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Answer:

the second one iy s very incorrect

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