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2 years ago

ASAP DINT ANSWER IF YOU DONT DO ALL BRAINLEST TO THE ORECT ANSWERS

Mathematics

1 answer:

KiRa [710]2 years ago

8 0

Answer:

The first one towards the left, or the green triangle, would be 70 degrees.

The second one, or the one in the middle, would be 108 degrees.

The last one, or the yellow triangle, would be 65 degrees.

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-3x+4y=7 y=3x-5 I NEED HELP PL Z HELP ME

andrew-mc [135]

$- 3x + 4y = 7 \\ y = 3x - 5$

[Substitute the given value of y into the first equation]

$- 3x + 4 \times (3x - 5) = 7$

[Distribute 4 through the parentheses]

$- 3x + 12x - 20 = 7$

[Collect like terms]

$9x - 20 = 7$

[Move the constant to the right-hand side and change its sign]

$9x = 7 + 20$

[Add the numbers]

$9x = 27$

[Divide both sides of the equation by 9]

$x = 3$

[Substitute the given value of x into the second equation]

$y = 3 \times 3 - 5$

[Multiply the numbers]

$y = 9 - 5$

[Subtract the numbers]

$y = 4$

[The possible solution of the system is the ordered pair (x,y)]

$(x,y)=(3,4)$

3 0

1 year ago

Please help I’ll mark you brainlist! :)

irina [24]

Answer:

x=120

Step-by-step explanation:

8 0

1 year ago

Read 2 more answers

The sum of the areas of two circles is 80 pie square meters. Find the length of a radius of each circle if one of them is twice

Svetach [21]

Answer:

The radius of the circles are $4\ m$ and $8\ m$

Step-by-step explanation:

Let

x-----> the radius of larger circle

y----> the radius of smaller circle

we know that

$\pi x^{2} +\pi y^{2}=80\pi$

$x^{2} +y^{2}=80$ -----> equation A

Remember that

$x=2y$ -----> equation B

substitute equation B in equation A and solve for y

$(2y)^{2} +y^{2}=80$

$4y^{2} +y^{2}=80$

$5y^{2}=80$

$y^{2}=16$

$y=4\ m$

Find the value of x

$x=2y$

$x=2(4)=8\ m$

therefore

The radius of the circles are $4\ m$ and $8\ m$

4 0

2 years ago

Look at the diagram and the following information to find the value of x.

lisov135 [29]

A. PT and TQ are equal since they are both bisected by T. So, set them equal to each other you get the equation:
5x+3 =48
5x=45
x=9

8 0

2 years ago

Britney scored an 85 on her last math test write the prime factorization on 85

7nadin3 [17]

Answer:

$5 \times 17$

Step-by-step explanation:

Just so you know, for your information, composite numbers have more than two factors, and prime numbers have EXACTLY two factors [1 and itself (that number)].

* A common mistake is that people make is that they say that all even numbers are composite, and that is false because there are odd numbers that are PERFECT SQUARES and can be divided evenly without leaving a remainder. So, using the Prime Factorization Method, you can do this in two structures:

Ladder Diagram
Factor Tree

Factor Tree

/ \

17 5

Ladder Diagram

17|85

5|5

In the Ladder Diagram, when you are down to 1, you know that factorization is over and there is nothing else to do.

So, with that being said, the prime factorization of 85 is 17 × 5.

I am joyous to assist you anytime.

5 0

2 years ago