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3 years ago

How many solutions does the system of equations have?

Mathematics

1 answer:

omeli [17]3 years ago

7 0

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5(2x + 3)2 when x = 3.

Anni [7]

Answer:

Step-by-step explanation:

5 x 2=10 x 3 = 30

6 0

3 years ago

Multiply. Do not round your answer. 6.9 × 1.221 = Thanks :D

Ann [662]

Answer:

8.4249 ur answer....

hope it helps

6 0

3 years ago

Combine likes terms to create an equivalent expression 1/7 - 3(3/7h -2/7)

Anastasy [175]

$\frac{1}{7} -3(\frac{3}{7}h -\frac{2}{7}) = \frac{7-9h}{7}$

Solution:

Given expression is:

$\frac{1}{7} -3(\frac{3}{7}h -\frac{2}{7})$

We have to combine the like terms

From given expression,

$\frac{1}{7} -3(\frac{3}{7}h -\frac{2}{7})$

By distributive property,

The distributive property lets you multiply a sum by multiplying each addend separately and then add the products.

a(b + c) = ab + bc

Therefore,

Solve for brackets using distributive property

$\frac{1}{7} - (3 \times \frac{3}{7}h) + (3 \times \frac{2}{7})\\\\\frac{1}{7} - \frac{9h}{7} + \frac{6}{7}$

Add 1/7 and 6/7

$\frac{1}{7} + \frac{6}{7} -\frac{9h}{7}\\\\\frac{1+6}{7} -\frac{9h}{7}\\\\Simplify\\\\\frac{7}{7}-\frac{9h}{7}\\\\1-\frac{9h}{7}\\\\Simplify\\\\\frac{7-9h}{7}$

Thus the equivalent expression is found

5 0

3 years ago

(I’m marking brainliest) plzzz help me out!!!

larisa86 [58]

Answer:

14, 16, 18, 20

Step-by-step explanation:

4 0

3 years ago

Find Y of the polygon

Deffense [45]

I that 'y' is 45 degrees because of alternate angles (I think its called).

If you look at the large triangle on the left where the corner angles are 35 and 80 and 20+an unknown angle. We can work out the missing angle by doing 180-80-35-20= 45.

And so if we use the fact that alternate angle must be equal then y= 45 degrees (I think!)

7 0

3 years ago

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