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3 years ago

Giving brainliest, and 50 points pls help

Mathematics

1 answer:

Anestetic [448]3 years ago

3 0

Answer:

1.x−7=4

Answer:

x=11

2.9+x=14

Answer:

x=5

3.x+7=16

Answer:

x=9

4.x+3=−18

Answer:

x=−21

5.17+x=18

Answer:

x=1

6.23=x−13

Answer:

x=36

7.4=x+12

Answer:

x=−8

8.19=x−6

Answer:

x=25

9.x−2=21

Answer:

x=23

10.x−7=−26

Answer:

x=−19

11.11=x+5

Answer:

x=6

Step-by-step explanation:

Hope I helped

Brainliest plz

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(x+a)^2 -7 = x^2 +10x +b<br><br> Work out the value of a and b.

Gekata [30.6K]

Answer:

(x+a)²-7=x²+10x+b

simplifying,we get

x²+2ax+a²-7=x²+10x+b

the coefficient of x on both sides should be equal

therefore

2a=10

a=10/2=5

also for b

a²-7=b

5²-7=25-7=b

b=18

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3 years ago

The coordinates of the following points represent the vertices of a

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La fórmula correcta para encontrar el valor del coseno de un ángulo agudo en un triángulo rectángulo dado es:

Digiron [165]

Answer:

El coseno del ángulo esta dado por:

$cos(\theta)=\frac{CA}{H}$

Step-by-step explanation:

Si tenemos un triángulo recatángulo, el coseno del ángulo está dado por:

$cos(\theta)=\frac{CA}{H}$

Donde:

CA es el cateto adyacente
H es la hipotenusa del triángulo

Espero te haya sido de ayuda!

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3 years ago

Find the distance between points P(4, 4) and Q(9, 3) to the nearest tenth

ddd [48]

Answer:

$5.1$ units

Step-by-step explanation:

(4, 4) & (9, 3)

To find the distance of two points, we use the distance formula:

$d = \sqrt{(x_{2}-x_1)^2 + (y_2-y_1)^2 }$

Let's plug in what we know.

$d = \sqrt{(9 - 4)^2 + (3 -4)^2 }$

Evaluate the parentheses.

$d = \sqrt{(5)^2 + (-1)^2 }$

Evaluate the exponents.

$d = \sqrt{(25) + (1)}$

Add.

$d = \sqrt{(26)}$

Evaluate the square root.

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Round to the nearest 10th.

$5.1$ units

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3 years ago

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