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2 years ago

Use the quadratic formula to solve the following quadratic equation.

Mathematics

1 answer:

irina1246 [14]2 years ago

4 0

Answer:

3.89 and -0.39.

Step-by-step explanation:

To find the answer we need to find what is what based of ax squared plus/minus bx + c = 0. A is 2, b is -7, and C is - 3. Now using the formula -b plus minus square root of b squared minus 4 time a time c all divided by 2a.

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yan [13]

Answer:

7,854,000

because the 308 people would have to be at least 500 to round up to 7,855,000

5 0

2 years ago

Kenny had 5/7 more trading cards than lee. After Kenny collected 50% more trading cards, he had 220 more trading cards than lee.

svp [43]

Answer:

Step-by-step explanation:

Let X is the number of cards Kenny has

Let Y is the number of cards Lee has

1. Kenny had 5/7 more trading cards than lee, it means

X = Y + 5/7X (1)

2. After Kenny collected 50% more trading cards, he had 220 more trading cards than lee, it means:

X + 50%X = Y + 220 (2)

So, we solve the 2 equations to find out X and Y

$\left \{ {{X=Y + 5/7X} \atop {1.5X=Y +220}} \right.$

<=> X = $\frac{3080}{17}$ and Y = $\frac{880}{17}$

<=> X ≈181 and Y ≈ 52

6 0

2 years ago

Brett is 75 feet from the base of a building. he measures the angle of elevation to the top of the building and records it as 80

SashulF [63]

This is the concept of trigonometry, we are required to calculate the number of floors the building has given the information above;
# floors=[height of the building]/[height of each floor]
height of each floor=17 ft
let the height of the building be,h.
h is given by;
tan theta=opposite/adjacent
theta=80
opposite=h
adjacent=75 ft
thus
tan 80=h/75
h=75 tan 80
h=425.35 ft
thus the number of floors will be:
425.35/17
=25.020≈25 floors

8 0

3 years ago

Complete each congruence statement by naming the corresponding angle or side. NO LINKS!!!

Oksanka [162]

Answer:

Solution given:

<JKL=<KLS

FD=GD

5 0

3 years ago

Read 2 more answers

During second period, Carmen completed a grammar worksheet. Of the 35 questions,

Veronika [31]

Answer:

Step-by-step explanation:

10% of 35 is 3.5. 3.5 x 4 = 14

5 0

2 years ago