3 years ago

Solve the following systems using substitution: x+y=4 x^2+y^2=9

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

7 0

X=3
Y=1

3+1=4
3^2+1^2=9

Hope this helps :)

You might be interested in

The scores on a math test are normally distributed with a mean of 64 and a standard deviation of 8. Tara scored 52 on the test.

Dvinal [7]

A z-score<span> is the number of standard deviations from the mean a data point is.
</span>
Standard deviation explains by how much the members of a group differ from the mean value for the group.
Using the z-score formula:
z = ( x - μ ) ÷ σ
Where;
x = score
μ = Mean
σ = Standard deviation

Z- Score (Tara) = ( 52 - 64 ) ÷ 8
= - 12 ÷ 8
= - 1.5

Z- Score (Jamal) = ( 82 - 64 ) ÷ 8
= 18 ÷ 8
= 2.25

Z- Score (Samuel) = ( 66 - 64 ) ÷ 8
= 2 ÷ 8
= 0.25

6 0

3 years ago

A drawer has some red, green, and blue marbles. There are 33 marbles in all. Thete are 4 times as many red marbles as green marb

Vinvika [58]

Let:
x - green marbles
4x - red marbles
x/2 - blue marbles

$x+4x+\frac{x}{2}=33|\cdot2\\
2x+8x+x=66\\
11x=66\\
\boxed{x=6}\\\\
\boxed{4x=24}\\\\
\boxed{\frac{x}{2}=3}
$

6 0

3 years ago

What number is 40% of 3.600?

Natali5045456 [20]

Answer:

The answer should be 1.44

5 0

3 years ago

Read 2 more answers

I need help please i will give u brainly

Vinvika [58]

Answer: