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bagirrra123 [75]
3 years ago
10

For what value of a does the equation ax^2−3x−5=0 have 1 as one of its roots?

Mathematics
1 answer:
allsm [11]3 years ago
5 0
Answer: When a = 8, one of the roots of the equation will be 1.

To solve this problem, you could graph the equation with a 1 in the place of the a on a graphing calculator (there are some online).

Then, just keep changing the a value until the graph crosses the x-axis at 1. When, you enter an a value of 8, it will have a root of 1.
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A candle holder is in the shape of a triangular pyramid. The area of the base is 15 in2
EleoNora [17]

The volume of candle holder is 30 inches cubed.

Step-by-step explanation:

Given,

Area of base = A = 15 square inches

Height of candle holder = H = 6 inches

As the holder is in shape of triangular pyramid, therefore,

Volume of candle holder = \frac{1}{3}AH

Volume of candle holder = \frac{1}{3}*15*6

Volume of candle holder = \frac{90}{3}=30\ in^3

The volume of candle holder is 30 inches cubed.

7 0
3 years ago
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A bex contains 5 plain pencis and 5 pens. A second box contains 5 color pencils and 3 crayons. One item from each box is chosen
timama [110]

Answer:

x=16 pens

Step-by-step explanation:

7 0
3 years ago
The table represents a logarithmic function f(x). Use the description and table to graph the function, and determine the domain
dusya [7]

The domain of the function is x > 0 and the range of the function is -∞ < f(x) < ∞

<h3>How to determine the domain?</h3>

This is the set of input values on the table.

All input values (i.e. the x values) on the table are greater than 0 i.e. x > 0

Using the inequality notation, the domain of the table is x > 0

<h3>How to determine the range?</h3>

From the table, the logarithmic function outputs all zero, positive and negative numbers.

This means that the range is the set of all real numbers i.e. -∞ to ∞

Using the inequality notation, the range of the table is -∞ < f(x) < ∞

Read more about domain and range at:

brainly.com/question/11787743

#SPJ1

4 0
2 years ago
Evaluate 2-(-4) + (-g) where y= 7.
Phantasy [73]

Answer:

<h2>-1</h2>

Step-by-step explanation:

2 - (-4) + (-y)

Substitute y = 7 to the expression:

2 - (-4) + (-7) = 2 + 4 - 7 = 6 - 7 = -1

4 0
2 years ago
What is the least common denominator for 2-3,4-5,1-2
Masja [62]
2-3=1
4-5=20
1-2=1
i think this is it i have never really been good at this but i think it could be those one
8 0
3 years ago
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