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3 years ago

I need help please and thanks Number 9

Mathematics

1 answer:

Leni [432]3 years ago

4 0

Answer:

x= 1.75

Step-by-step explanation:

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Wallace has a $50 bill. Pizza pies cost $12.25 each. If p represents the number of pizzas he buys, write an expression for the c

elena-14-01-66 [18.8K]

He buys 4 pizzas oml that’s 20 characters now

6 0

3 years ago

What is 4.62 expressed as the quotient of two integers in simplest form?

ozzi

4.62 = 462/100 = 231/50

8 0

3 years ago

A bird sees a worm on the ground 50 m. below. The bird dives for the worm at a speed of 6 m/sec. The function h\left( t \right)

iragen [17]

<u>Given</u>:

The height of the bird at time t is given by the function $h(t)=-4.9t^2+6t+50$

We need to determine the time it takes the worm to be eaten by the bird.

<u>Time taken:</u>

The time can be determined by substituting h(t) = 0 in the function.

Thus, we have;

$0=-4.9t^2+6t+50$

Switch sides, we get;

$-4.9t^2+6t+50=0$

Let us solve the equation using the quadratic formula.

Thus, we get;

$t=\frac{-6 \pm \sqrt{6^{2}-4(-4.9) 50}}{2(-4.9)}$

Simplifying, we get;

$t=\frac{-6 \pm \sqrt{36+980}}{-9.8}$

$t=\frac{-6 \pm \sqrt{1016}}{-9.8}$

$t=\frac{-6 \pm 31.87}{-9.8}$

The values of t are given by

$t=\frac{-6 + 31.87}{-9.8}$ and $t=\frac{-6 - 31.87}{-9.8}$

$t=\frac{25.87}{-9.8}$ and $t=\frac{-37.87}{-9.8}$

$t=-2.4$ and $t=3.9$

Since, the value of t cannot be negative, then $t=3.9$

Thus, the time taken by the bird to eat the worm is $t=3.9$ seconds.

Hence, Option B is the correct answer.

5 0

3 years ago

Que numero multiplicado por -8 da como resultado 72

Bumek [7]

Answer:

2×72 = 144

Step-by-step explanation:

¡Aquí puedes aprender todo sobre las multiplicaciones! HAGA CLIC PARA TWITTEAREntonces, la multiplicación 2 x 72 es una suma abreviada.

3 0

3 years ago

Find the value of x. Round to the nearest tenth.

timurjin [86]

Answer:

1.6 ft

Step-by-step explanation:

If you use the Pythagorean Theorem to solve for x, you get:

$x=\sqrt{2.1^2-1.4^2}$

$x=\sqrt{2.45} = 1.56524758425$

Rounded to the nearest tenth, the answer is 1.6

8 0

3 years ago