All categories

3 years ago

Which could be the dimensions of a rectangular prism whose surface area is less than 160 square feet? Check all that apply.

Mathematics

2 answers:

tigry1 [53]3 years ago

7 0

ch4aika [34]3 years ago

3 0

It is the first one (8 feet by 4 feet by 3 feet) and the last one (3 feet by 5 feet by 7 feet) I just took the test.

You might be interested in

(0,1) (3,-8) linear equation

Dmitry [639]

Answer:

The answer is

$y = - 3x + 1$

Step-by-step explanation:

❃Incase you forgot what the linear equation formula is ☟

$y = mx + b$

❃Incase you also forgot, The is what the slope formula is ☟

$m = \frac{y_2 - y_1 }{x_2 - x_1}$

➊ First: We are going to be solving for the slope.

$m = \frac{ - 8 - 1}{3 - 0} = \frac{ - 9}{ \: \: \: 3} = - 3$

➋Second: We find the y-intercept.

$y = mx + b \\ - 8 = - 3(3) + b \\ - 8 = - 9 + b \\ \frac{ + 9 = + 9 \: \: \: \: \: }{1 = b}$

➌Third: Plug in.

$y = - 3x + 1$

8 0

3 years ago

What should I buy? A study conducted by a research group in a recent year reported that 57% of cell phone owners used their phon

vovangra [49]

Answer:

Hence, the probability that seven or more of them used their phones for guidance on purchasing decisions is 0.7887

Step-by-step explanation:

We are given the following information in the question:

We treat people using phones in the store for guidance as a success.

P(People use phone for guidance) = 57% = 0.57

Then the number of people follows a binomial distribution, where

Formula:

$P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}$

where n is the total number of observations, x is the number of success, p is the probability of success.

Now, we are given n = 14 and x = 7

We have to evaluate:

$P(x \geq 7) = P(x = 7) + P(x = 8) + P(x = 9) + P(x = 10) + P(x =11) + P(x = 12) + P(x = 13) + P(x = 14)\\= \binom{14}{7}(0.57)^7(1-0.57)^7 + \binom{14}{8}(0.57)^8(1-0.57)^6 + \binom{14}{7}(0.57)^9(1-0.57)^5 + \binom{14}{7}(0.57)^{10}(1-0.57)^4 + \binom{14}{7}(0.57)^{11}(1-0.79)^3 + \binom{14}{7}(0.57)^{12}(1-0.57)^2 + \binom{14}{7}(0.57)^{13}(1-0.57)^1 + \binom{14}{7}(0.57)^{14}(1-0.57)^0\\= 0.7887 = 78.67\%$

Hence, the probability that seven or more of them used their phones for guidance on purchasing decisions is 0.7887

5 0

3 years ago

A store is selling 5 cans of tomato sauce for $4.50. What is the unit price?

NARA [144]

Hi there! The answer is $0.90

To find the price per unit we must divide the total amount of money by the amount of units sold. So we get the following:
$4.50 / 5 = $0.90

4 0

3 years ago

Read 2 more answers

I need to know the answer now

Wewaii [24]

Um, ok I'm not entirely sure what number sets you need, but I'll do my best.

Integers: 5, -3, 0, 1, -12

Fractions: 1/2, 4 1/2

Decimals: 14.2, -19.4, 0.125

All of the above can also be considered Rational numbers. Rational numbers are numbers that can be expressed as a fraction. All For example, 14.2 is 14 1/5.

Irrational number: $\pi$

Pi is irrational. It cannot be expressed as a fraction.

4 0

4 years ago

Divide these polynomials.

Kryger [21]

( $6x^{2} + 14 x^{2} + 6x - 2$ ) ÷ ( $2x + 2$ )
= $3x^{2} + 4x - 1$

3 0

4 years ago