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3 years ago

How do you do this?! Please help me it’s due tomorrow

Mathematics

2 answers:

Eduardwww [97]3 years ago

6 0

136 would be the answer ! 4*4 is 18 x 8!

boyakko [2]3 years ago

5 0

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Out of 290 racers who started the marathon, 272 completed the race, 15 gave up, and 3 were disqualified. What percentage did not

jeka57 [31]

Answer:

6% of the racers did not ocmplete the marathon

Step-by-step explanation:

290 racers

272 completed the race

15 + 3 = 18 did not complete the race

$\frac{272}{290}$ = 0.94 = 94%

$\frac{18}{290}$ = 0.06 = 6%

7 0

3 years ago

Rewrite the equation so that the left side is a factored perfect square.

Nat2105 [25]

C because i studied the problem

3 0

3 years ago

F(x) = x^2 + 4x + 20 find the real roots. take your time if you want :)

s344n2d4d5 [400]

Answer:

No real roots

$x = -2 + 4i, x = -2 - 4i$

Step-by-step explanation:

Hello!

We can solve the quadratic by using the Quadratic Formula.

Standard form of a Quadratic: $ax^2 + bx + c = 0$

Quadratic Equation: $x = \frac{-b\pm\sqrt{b^2 - 4ac}}{2a}$

Given our Equation: $f(x) = x^2 + 4x + 20$

a = 1
b = 4
c = 20

Set the equation to 0 and solve using the formula.

<h3>Solve</h3>

$x = \frac{-b\pm\sqrt{b^2 - 4ac}}{2a}$
$x = \frac{-4\pm\sqrt{4^2 - 4(1)(20)}}{2(1)}$
$x = \frac{-4\pm\sqrt{16 - 80}}{2}$
$x = \frac{-4\pm\sqrt{-64}}{2}$
$x = \frac{-4\pm8i}{2}$
$x = -2 + 4i, x = -2 - 4i$

There are no real roots to the quadratic.

8 0

2 years ago

Write the symbolic form of the written expression given below.

svetlana [45]

$1) \ \boxed{13^2*4-3=169*4-3=\676-3=673}\\
\\
2) \ \boxed{(8-6)x=2x}\\
\\
3) \ \boxed{\sqrt{36} +4^2=6+16=22}\\
\\
4) \ \boxed{[(7*4)-\frac{16}{4}]-19=[28-4]-19=24-19=5}$

6 0

3 years ago

A hummingbird egg's mass

Levart [38]

Answer:

A hummingbird eggs mass is approximately 0.374 mg.

8 0

3 years ago

Read 2 more answers