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3 years ago

You call 5 friends, tomorrow they call 5 each. Write an equation.

Mathematics

1 answer:

Softa [21]3 years ago

6 0

Answer:

5+5=10

Step-by-step explanation:

5+5=10

hope this helps. plz mark me as brainliest.

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Just keep getting more homework.<br> i really need help

rusak2 [61]

Answer:

1. x = 1, y = -3

2. x = 3, y = 4

Step-by-step explanation:

Here, we want to solve the sets of simultaneous equations;

a) -y = 5x-2

-3y = -5x + 14

substitute 1 into ii

3(5x-2) = -5x + 14

15x - 6 = -5x + 14

15x + 5x = 14 + 6

20x = 20

x = 20/20

x = 1

from;

-y = 5x - 2

y = -5x + 2

y = -5(1) + 2

y = -3

b) -2y = -6x + 10

2y = x + 5

Substitute ii into i

-(x + 5) = -6x + 10

-x - 5 = -6x + 10

-x + 6x = 10 + 5

5x = 15

x = 15/5

x = 3

2y = x + 5

2y = 3 + 5

2y = 8

y = 8/2

y = 4

4 0

3 years ago

A student says the prime factors of 17 are 1 and 17

Tju [1.3M]

That is correct as 17 is a prime number and can only be divided by 1 and itself

Hope this helps :)

6 0

4 years ago

Read 2 more answers

The sales tax in Texas is 8.25% and an item costs $600. How much is the tax?

butalik [34]

Answer:

49.5

Step-by-step explanation:

8 0

3 years ago

A model is shaded to represent 1 40/100, write two fractions that are equivalent

givi [52]

Answer:

$\frac{140}{100}$

$\frac{90}{50}$

5 0

3 years ago

Jada is standing 10 feet away from the base of the tree and spots a nest sitting on a branch. The angle of elevation from the gr

expeople1 [14]

Answer:

14.3 feet

Step-by-step explanation:

Let the height of the tree = x feet.

It is given that the horizontal distance from the base of tree = 10 feet and the angle of elevation to the nest is 55°.

So, we get the following figure.

As, we are obtaining a right angled triangle.

Using the trigonometric form for the angles of a right angled triangle, we get,

$\tan x=\frac{opposite}{adjacent}$

i.e. $\tan 55=\frac{x}{10}$

i.e. $x=10\times \tan 55$

i.e. $x=10\times 1.43$

i.e. $x=14.3$

Hence, the height of the tree is 14.3 feet.

4 0

4 years ago