All categories

2 years ago

9. Margie and Glenn are trying to solve the following system of equations.

Mathematics

1 answer:

vampirchik [111]2 years ago

3 0

5x - 4y = 23 x 2
7x + 8y = 5

10x - 8y = 46
7x + 8y = 5

17x = 51
X = 51/17
X = 3

7(3) + 8y = 5
21+8y = 5
8y = 5 - 21
8y = -16
Y = -16/8
Y = -2

You might be interested in

Each inch on a map of Roswell, New Mexico represents $0.51\text{ mile}$. If two hills in Roswell are $7$ inches apart on the map

pav-90 [236]

Answer:

$3.57$

Step-by-step explanation:

we know that

The scale factor on a map is equal to

$\frac{1}{0.51}\frac{inch}{miles}$

by proportion

Find how many miles are in the real life $7$ inches apart on the map

$\frac{1}{0.51}\frac{inch}{miles}=\frac{7}{x}\frac{inches}{miles}\\ \\x=0.51*7\\ \\x=3.57 \ miles$

5 0

2 years ago

There are 8 sophomores on the academic team. At the last competition, they each took the math test. Their scores were 82%, 92%,

Sav [38]

Answer:

79%

Step-by-step explanation:

To find the median, you need to arrange the numbers in ascending order. Than pick the middle number. If there are two middle numbers then you add them together and then divide by 2.

3 0

2 years ago

The graph below represents a polynomial.

AleksAgata [21]

Answer:

Step-by-step explanation:

The polynomial on the graph has zeros or x-intercepts at x = -3, 0, 2, 4. These come from the factors x (x+3)(x-2)(x-4). Notice at 4 it doesn't cross but just touches. This means it has a degree of 2. So the factors are $x(x+3)(x-2)(x-4)^2$ . This matches to C.

6 0

2 years ago

Find the unit price of 60lbs of honey for $123.99. Round your answer to the nearest cent if necessary.

astraxan [27]

The unit price is $2.07 per lb (pound).

6 0

2 years ago

Read 2 more answers

A pizza lover wants to compare the average delivery times for four local pizza restaurants. Over the course of a few weeks, he o

xenn [34]

Answer:

At least two of the restaurant have different mean delivery time.

Step-by-step explanation:

The ANOVA known as Analysis of variance involves the hypothesis testing of means on the basis of variances. The null hypothesis in ANOVA is taken as the equality mean i.e. H0: All means are equal. Whereas alternative hypothesis consists of at least two means are not equal.

The problem states that a pizza lover is comparing average delivery time. The null and alternative hypothesis in this case would be

H0: All restaurant have equal mean delivery time.

H1: At least two restaurant have different mean delivery time.

8 0

2 years ago