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3 years ago

Jody got 90 problems correct on her test. Mildred got 65% of that amount correct. How many did Mildred get correct?

Mathematics

1 answer:

NikAS [45]3 years ago

7 0

Answer:

I think it is 59

Step-by-step explanation:

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A modified roulette wheel has 36 slots. One slot is 0, another is 00, and the others are numbered 1 through 34, respectively.

Elena-2011 [213]

Answer:

$P(win) = 0.4722$

Step-by-step explanation:

Given

$n = 36$ --- slots

$Even = 17$ i.e. even numbers between 1 and 34 (inclusive)

Required

$P(win)$

The probabiity of winning is the number of even numbers divided by the total slot;

i.e.

$P(win) = \frac{Even}{n}$

So, we have:

$P(win) = \frac{17}{36}$

$P(win) = 0.4722$

7 0

2 years ago

Write an equation for the parabolla

pentagon [3]

well, is noteworthy that an x-intercept is when y = 0 or namely is a solution or root of the quadratic, so we know then that the x-intercepts or solutions are at (-1,0) and (3,0), that simply means that

$\bf (\stackrel{x}{-1},\stackrel{y}{0})\qquad (\stackrel{x}{3},\stackrel{y}{0})\qquad \begin{cases} x = -1\\ x+1=0\\ \cline{1-1} x=3\\ x-3=0 \end{cases}~\hfill \implies ~\hfill \stackrel{\textit{equation of the parabola}}{y = a(x+1)(x-3)} \\\\\\ \textit{we also know that } \begin{cases} x = 1\\ y = -8 \end{cases}\implies \underline{-8}=a(\underline{1}+1)(\underline{1}-3)$

$\bf -8=a(2)(-2)\implies -8=-4a\implies \cfrac{-8}{-4}=a\implies \boxed{2=a} \\\\[-0.35em] ~\dotfill\\\\ y=2(x+1)(x-3)\implies y=2(\stackrel{\mathbb{FOIL}}{x^2-2x-3})\implies y=2x^2-4x-6$

4 0

2 years ago

A cube has a volume of 343 cm3. What is the length of each side of the cube?

Anna [14]

Volume of a cube=side³

Data:;
volume=343 cm³
Therefore:

343 cm³=side³
side=∛343 cm³=7 cm.

Answer: the lenght of each side of the cube is 7 cm.

3 0

2 years ago

Use exactly four 4's along with any combination of the symbols plus space minus space cross times space divided by spaceand ( )

____ [38]

(4/4) + (4/4)
1 + 1 = 2

4 0

2 years ago

Use the properties of exponents to rewrite the expression.<br> (-3yz)(-3yz)(-3yz)(-3yz)

Lera25 [3.4K]

Answer:

Answer is 81y^4z^4

Step-by-step explanation:

The expression is (-3yz) (-3yz) (-3yz) (-3yz).

Since all the four terms have power 1:

(-3yz)^1 (-3yz)^1 (-3yz)^1 (-3yz)^1

We know that we can add the powers if the terms have same base

So,

=(-3yz)^1+1+1+1

=(-3yz)^4

=(-3)^4(y)^4(z)^4.

If the power is an even number than the negative sign changes into positive sign.

=3^4y^4z^4

=81y^4z^4

Thus the answer is 81y^4z^4....

3 0

3 years ago