2 years ago

If y = 7 what is the value of x

Mathematics

1 answer:

Katyanochek1 [597]2 years ago

8 0

Answer:If y = 7 what is the value of x would be 7

Step-by-step explanation:

You might be interested in

HELPPPPPPPPPPPP With this question ( taking quiz)

creativ13 [48]

Answer:

swimming pool

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Solve x2 - 8x - 9 = 0. Rewrite the equation so that it is of the form x2 + bx = c.

barxatty [35]

Answer:

x=9,-1 and $x^2+(-8)x=9$

Explanation:

we have been given with the quadratic equation $x^2-8x-9$

we compare the given quadratic equation with general quadratic equation

general quadratic is $ax^2+bx+c=0$

from given quadratic equation a=1,b= -8,c= -9

substituting these values in the formula for discriminant $D=b^{2}-4ac$

$D=(-8)^2-4(1)(-9)=100$

Now, to find the value of x

Formula is $x=\frac{-b\pm\sqrt{D}}{2a}$

Now, substituting the values we will get

$x=\frac{-(-8)\pm\sqrt{100}} {2}= \frac{8\pm10}{2}=9,-1$

And rewritting the given equation by shifting 9 to right hand side of the given equation and taking minus inside the bracket so as to convert it in the form of

$x^2+bx=c$

4 0

2 years ago

Read 2 more answers

What is the mass of a 15cm cube of lron if density of iron is 78grams/cm

amm1812

Answer:

M = 1170 g

Step-by-step explanation:

Mass = density × volume

M = p x v

M = 78 x 15

M = 1170 g

3 0

2 years ago

Read 2 more answers

Simplify 15 - 4(11 - 8). A. 27 B. 3 C. -3 D. 21

motikmotik

Answer:

15-44+32= 3

Step-by-step explanation:

3 0

2 years ago

Parker has $2,500 in her bank account that earns 3.8% interest annually. How much money will she have in her bank account after

svlad2 [7]

Answer:

$2,860

Step-by-step explanation:

2,500 * 3.8% = 90 in interest a year

90 * 4 = 360 in interest

add that to what she put in

2,860

3 0

3 years ago

Read 2 more answers