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4 years ago

I NEED HELP PLEASE

Mathematics

1 answer:

sergey [27]4 years ago

7 0

Answer:

on a graph or a number line

Step-by-step explanation:

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Louis bought a burger and soda for $8. Kate purchased a slice of pizza and soda for $9. David purchased a burger, a slice of piz

padilas [110]

Answer:

cost of a burger= $4.5

Cost of soda = $3.5

Cost of a slice of pizza = $5.5

Step-by-step explanation:

Let x = the cost of a burger.

Let y = the cost of a soda.

Let z = the cost of a slice of pizza.

Louis bought a burger and soda for $8. This means

x + y = 8 - - - - - - - -1

Kate purchased a slice of pizza and soda for $9. This means

z + y = 9 - - - - - - - - - 2

David purchased a burger, a slice of pizza, and a soda for $13.50. This means

x + y + z = $13.50 - - - - - - - 3

Substituting x = 8-y and z = 9-y in equation 3, it becomes

8-y + y + 9-y = 13.50

-y -y + y = 13.50 -8-9

-y = -3.5

y = $3.5

Put y = 3.5 in equation 1

x + 3.5 = 8

x = 8 - 3.5 = $4.5

Put x = 4.5 and y = 3.5 in equation 3.

4.5 + 3.5 + z = 13.5

8 + z = 13.5

z = 13.5 - 8 = $5.5

3 0

3 years ago

Engineers are planning a new bridge to cross a small river. Surveyors created the diagram to show where the bridge would cross t

Bogdan [553]

Answer:

56.25 feet

Step-by-step explanation:

As per diagram, the two triangles are similar, as all angles are congruent (one is vertical, one is right, one is the

Let the distance across the river be x.

The ratio of corresponding sides is same. Find x using ratios:

x/45 = 75/60
x = 45*75/60
x = 56.25 feet

6 0

3 years ago

Read 2 more answers

The planet Jupiter is approximately 780 million km from the Sun.

iren2701 [21]

Answer:

light takes 3×10^5 second s

so total seconds taken by the light =780×10^6/3×10^5

=260×10
=2600 seconds

1 min=60sec

no. of min=2600/60

=43333min

8 0

3 years ago

Please help me solve 4 inequalities and show work. Will get brainiest!!

FrozenT [24]

1. y ≤ 4x/3+5
2. y< 6x/4+3

5 0

3 years ago

Determine the number of lines of symmetry for the figure

Ganezh [65]

10 is the right answer

8 0

3 years ago

***I NEED HELP PLEASE***

I NEED HELP PLEASE