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Savatey [412]
3 years ago
9

Help meeeee plzzzzzzzzzz i need this done

Mathematics
2 answers:
Oksana_A [137]3 years ago
4 0

Answer:

1. yes 2. no

Step-by-step explanation:

1. 3(5)-2(7)=1 √

2. 2(-3)+8(-4)=-38 not 26 ×

olchik [2.2K]3 years ago
3 0

Answer:

1.) yes

2.) no

Step-by-step explanation:

1.) Yes

3x - 2y = 1

3(5) - 2(7) = 1

15 - 14 = 1

1 = 1

2.) No

2x + 8y = 26

2(-3) + 8(-4) = 26

-6 - 32 = 26

-38 ≠ 26

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A quadratic function that has the vertex (-2, -4) and passes through the point (-1, -6)
spayn [35]

Answer:

f(x) = -2 (x + 2)² - 4  

Step-by-step explanation:

f(x) = a (x - h)² + k     (h , k) is vertex    h = -2     k = -4

pass point (-1 , -6)     f(x) = -6 and x = -1

-6 = a (-1 - (-2))² + (-4)

-6 = a - 4

a = -2

quadratic function: f(x) = -2 (x + 2)² - 4

5 0
3 years ago
13. Find the value of x.<br> 140°<br> 136°<br> х<br> 148°<br> 142°<br> 150°
garik1379 [7]

Answer:

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140°+148°+136°+150°+142°+90°+x=900°

806+x=900°

x=900°-806°

x=94°

8 0
3 years ago
9th grade math please help its urgenttt
vovangra [49]

Answer:

B

Step-by-step explanation:

observe

2x^2-5x+5=0\\x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\=\frac{5\pm \sqrt{(-5)^2-4(2)(5)}}{2(2)}\\=\frac{5\pm \sqrt{-15}}{4}\\=\frac{5\pm i\sqrt{15}}{4}

3 0
3 years ago
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Identify the vertex of y = x2 + 4x + 5.
Xelga [282]
ANSWER

The vertex is (-2,1)

EXPLANATION

We want to find the vertex of

y = {x}^{2} + 4x + 5

We complete the square to obtain,

y = {x}^{2} + 4x + {(2})^{2} - {(2})^{2} + 5

The first three terms forms a perfect square trinomial.

y = {(x + 2})^{2} - 4 + 5

The vertex form is

y = {(x + 2})^{2} + 1


This equation is in the form;

y = a{(x -h})^{2} + k


where (h,k)=(-2,1) is the vertex.
4 0
3 years ago
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Katherine earned $105.00 at her job when she worked for 7 hours. How much money did she make earn each hour?
Bond [772]
Katherine earned $15 an hour, divide $105 by the seven hours she worked
8 0
3 years ago
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