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frez [133]
4 years ago
14

When do two ratios form a proportion?

Mathematics
2 answers:
Karo-lina-s [1.5K]4 years ago
8 0

A proportion is when two ratios are equal.

For example the ratio 10:5 is equal to the ratio 2:1, therefore this is a proportion.

umka21 [38]4 years ago
5 0

when they are equal

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How do I solve these questions?
PSYCHO15rus [73]

Function rule:  a = 20w + 115

Slope: 20

Initial value: 115

------------------------------------------

We start with $115 in the account. This is the initial value. Each week we add on $20.

So we add $20 for 1 week

We add 2*20 = $40 for 2 weeks

We add 3*20 = $60 for 3 weeks

etc etc

In general, we add 20*w dollars for w weeks onto 115 to get a = 20w+115

The slope is 20 because this is the rate of change, ie how fast the account grows. It grows 20 dollars per week.

4 0
3 years ago
Can u help mee??Ill give u 20 points.Ty!
Lesechka [4]

Answer:

D

Step-by-step explanation:

hope this help

4 0
3 years ago
Read 2 more answers
I will give brainliest
garri49 [273]
4(100)=400
400/1=400
You will need 400 stakes
7 0
3 years ago
I hate maths!!!!!!!!!!!!!!!! Please help me!!!!!!!!!!!!!!!!!! brainliest will be given
VladimirAG [237]

Answer:

840 cm³

Step-by-step explanation:

Cut the prism into two cuboids.

The first cuboid has dimensions of 4 cm × 6 cm × 5 cm

The height is 4 cm, the width is 5 cm and the length is 6 cm.

The second cuboid has dimensions of 15 cm × 6 cm × 8 cm.

The height is 8 cm, the width is 6 cm and the length is 15 cm.

The formula for the volume of the cuboid is l×w×h.

Length × Width × Height

The first cuboid has a volume of:

4 cm × 6 cm × 5 cm

= 120 cm³

The second cuboid has a volume of:

15 cm × 6 cm × 8 cm

= 720 cm³

Add the volumes of the two cuboids.

720 cm³ + 120 cm³

= 840 cm³

The volume of the prism is 840 cm³.

4 0
3 years ago
Read 2 more answers
Solve the following system of equations using any method (substitution or elimination) SHOW YOUR WORK
denpristay [2]
Y=-2x+3-4x+2y=8
y=-6x+3+2y=8
-2y    -2y        -2y
-y=-6x+3=8-2y
+3     =3    +3
-y+3=-6x=11-2y
(this is as close as i got)
6 0
4 years ago
Read 2 more answers
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