All categories

3 years ago

What Number must you add to complete the square? x2+2x=23

Mathematics

1 answer:

Vadim26 [7]3 years ago

7 0

X = {3.898979486, -5.898979486}

x = {3.9 x -5.9}

You might be interested in

If (x+2) is a factor of x^3-6x^2+kx+10, k=

Alja [10]

If a binomial $(x-a)$ is a factor of a polynomial, then $a$ is a root of this polynomial.

$(x+2)=(x-(-2)) \Rightarrow a=-2\\\\
(-2)^3-6\cdot(-2)^2+k\cdot(-2)+10=0\\
-8-24-2k+10=0\\
-2k=22\\\
\boxed{k=-11}
$

3 0

3 years ago

Help me please help me

Vlad [161]

999999999999999999999999999999Answer:9999999999999999999 poppplygojhyijjuhhnnjnnnjjndjbjkghdhhghbenhdjgetpodjfhdj

Step-by-step explanation:

4 0

3 years ago

Estimate the following sum by rounding each number to the nearest 10<br>plz

Harlamova29_29 [7]

Answer:

184

Step-by-step explanation:

129.5 + 34.62 + 19.1

130 + 35 + 19

184

7 0

3 years ago

What's the additive inverse of 80

DiKsa [7]

The additive inverse of 80 is -80. Additive inverse is simply the opposite of a number. For example, the additive inverse of 4 is -4.

7 0

4 years ago

A square pyramid has a height of 6 units and a volume of 70 units3. If a square prism has the same base area and volume as the s

inysia [295]

Answer:

The height is 2 units

Step-by-step explanation:

Find the area of the base of the square pyramid

we know that

The volume of the square pyramid is equal to

$V=\frac{1}{3}BH$

where

B is the area of the base and H is the height of the pyramid

we have

$H=6\ units$

$V=70\ units^{3}$

substitute in the formula and solve for B

$70=\frac{1}{3}B(6)$

$B=70/2=35\ units^{2}$

step 2

Find the height of the square prism

we know that

The volume of the square prism is equal to

$V=Bh$

where

B is the area of the base and h is the height of the prism

we have

$B=35\ units^{2}$

$V=70\ units^{3}$

substitute in the formula and solve for h

$70=(35)h$

$h=2\ units$

3 0

4 years ago

Read 2 more answers