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rosijanka [135]
3 years ago
10

Solve the simultaneous equations 5x−y=8 7x+4y=22

Mathematics
1 answer:
Rzqust [24]3 years ago
3 0

Answer:

5x-8      m=5

m= -7/4

Step-by-step explanation:

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Sarah has 128 stickers. alex has 10 fewer stickers than sarah. how many stickers does Alex have.
ICE Princess25 [194]
That would mean that Alex has exactly 118 stickers.

5 0
3 years ago
What are the diameter and circumference of the unit circle? Answer using π.
sveticcg [70]

Answer:

Diameter = 2      Circumference = 2π

Step-by-step explanation:

The diameter of a circle is the radius*2 and the radius of a unit circle is 1 so the diameter is 2. The circumference of a circle is the diameter*π. Since you are allowed to express it in terms of π. Just leave it at 2π, though the actual value of π is approximately 3.14

4 0
4 years ago
Maxwell’s vegetarian tacos require 34 tablespoons of chili powder for every 12 pounds of vegetables. How much chili powder will
Crazy boy [7]

Answer:

2 1/4

How?

Set up a proportion. The proportion will be teaspoons of chili powder over pound of vegetables.

Because of the above, the first proportion will be:

x is 3/4 and y is 1/2. Across from that proportion make another one

x is "n" because you're trying to figure out how much chili powder you need. y is 1 3/4.

Multiply 3/4 and 1 3/4, which is 9/16. Then, divide 9/16 and 1/2, which is 9/8. Simplify it to 1 1/8, and Maxwell will need 1 1/8 teaspoons of chili powder.

5 0
3 years ago
A) Change 2800 cm³ into litres.<br><br>b) Change 12.4/ into cm³.​
beks73 [17]

Answer:

2.8 liters

12400 cm^3

Step-by-step explanation:

a)

1000 cm^3 = 1 iter

2800 cm^3 * (1 liter)/(1000 cm^3) = 2.8 liters

b)

12.4 liters * (1000 cm^3)/(1 liter) = 12400 cm^3

5 0
3 years ago
Read 2 more answers
What is the product of<br> 9/20 - 1/4
wlad13 [49]

Answer:

\frac{1}{5}

Step-by-step explanation:

\frac{9}{20} - \frac{1}{4}

Make sure they have a common denominator. To do so, you must find a number the both have in come. Here, the number they have in common is 20.

What times 4 equals 20? 5. Whatever you do to the denominator you must do to the numerator.

\frac{5}{5} × \frac{1}{4} = \frac{5}{20}

Now you have \frac{9}{20} - \frac{5}{20} = \frac{4}{20}

Then you can simplify \frac{4}{20} to \frac{1}{5} by dividing it by \frac{4}{4}

8 0
3 years ago
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