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2 years ago

Which system of equations has exactly one solution?

Mathematics

1 answer:

tester [92]2 years ago

8 0

Answer: Most of them cross each other once so I am not sure which one is the answer (sorry)

Step-by-step explanation:

x+y=7 is parallel to 3x+3y=3 and -6x-6y=3

3x+y=-1 and 6x+2y=-2 have infinite solutions togther (both are on top of each other)

The rest of the ways cross each other once

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Without graphing, where will the line y=7x-2 cross the y axis?

Vadim26 [7]

Answer:

The line crosses the y-axis at -2

Step-by-step explanation:

y = mx + b 'm is the slope and b is the y-intersect (the place where the graph comes across the y-axis.

y = mx + b; y = mx + b; b = -2.

5 0

2 years ago

24 is what percent of 50?

maria [59]

Answer:

48%

Step-by-step explanation:

Use Is/Of

8 0

3 years ago

Read 2 more answers

A large pizza at palanizo pizzeria costs 6.80$ plus 0.90$ for each topping. The cost of a large cheese pizza at guido’s pizza is

r-ruslan [8.4K]

we are going to create a table in excel and we will assign different values of topping to know when the price is equal in both pizzerias

see the attached figure

the answer is

5 toppings from palanzio’s pizzeria

6 toppings from guido’s pizza

cost palanzio’s pizzeria----> 6.80+0.90*5-----> $11.30

cost <span>guido’s pizza------> 7.40+0.65*6----------> $11.30</span>

5 0

2 years ago

You receive an 11% commission on all the sales you make. This month, you made a sale of $45,050, what is your commission?

poizon [28]

Answer:

4,955.50

Step-by-step explanation:

45050x.11=4955.50

4 0

2 years ago

One plane can travel 20 miles per hour faster than another. One of them goes 285 miles in the same time it takes the other to go

Hatshy [7]

Answer:

$\huge\fbox{Answer ☘}$

$\bold\blue{190 \:miles/hr \:and \:170 \:miles/hr}$

Step-by-step explanation:

Let the speed of faster plane be x

therefore ,

speed of slower plane = x - 20

As the time taken is same ,

$\frac{285}{x} = \frac{255}{x - 20} \\ \\ \frac{57}{x} = \frac{51}{x - 20} \\ \\ 57(x - 20) = 51x \\ \\ 6x = 1140 \\ \\ x = 190$

therefore ,

faster plane travels at a speed of 190 miles/hr

while..

the slower plane travels at a speed = ‎ ‎ ‎ ‎ ‎ ‎( 190-20 ) miles/hr

‎ ‎ ‎ ‎ ‎‎ ‎ ‎ ‎ ‎‎ ‎=> 170 miles/hr

hope helpful~

7 0

1 year ago