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hodyreva [135]
3 years ago
13

What are the solutions of the quadratic equation 49x2 = 9?

Mathematics
2 answers:
Troyanec [42]3 years ago
8 0

Answer:

the answer is B !

pishuonlain [190]3 years ago
7 0
49x^2 - 9 = 0
As there is no x term, we can pretty much guess we have a situation where we factlrise by something known aa difference of two squares, so to factorise it:
49 = 7^2
9 = 3^2
x^2 = (x)^2
so...
(7x - 3)(7x + 3) = 0
7x - 3 = 0 7x + 3 = 0
x = 3/7 x = -3/7
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Hi! Please help me, will mark brainliest!
PIT_PIT [208]

Answer:

p(t) = 0 for t = 1

p(t) = 1 for t = 1/8 = 8^-1

Step-by-step explanation:

the graph you will have to do yourself.

just go there and type in

-  log_{8}(x)

well, don't type "log" in letters.

you start by typing the "-" sign, and then you need to look up the functions by clicking on the "funcs" button and look for the log functions .

pick the

log_{a}

option. and then simply enter 8 as the first parameter in the {} brackets and x as the second in the () brackets.

and then you see.

any logarithm is 0 for x (or t) = 1.

because any a⁰ = 1.

and the logarithm gives you that exponent of the base number that leads to the given x value.

in other words : a logarithm is the inverse function of an exponential function.

the exponential function is

y = a^x

and the logarithm then determines

x =  log_{a}(y)

that is all.

and

-  log_{8}(x)  = 1

means that the logarithm itself delivered -1.

and 8^-1 = 1/8

so, p(t) = 1 for t = 1/8

5 0
2 years ago
Tara wants to put a white fence aroung the yard including the garden. Write an
Cerrena [4.2K]

The perimeter of a rectangle is 2L + 2W, where L and W are the length and width, respectively. The dimensions of the garden are given, 6 x 12 ft.

 

The amount of fencing needed is 2(6) + 2(12) = 12 + 24 = 36 ft of fencing

6 0
2 years ago
At what interest rate must you invest $4500 to have $7,000 after 6 years, if the interest is compounded quarterly?
labwork [276]

Answer:

The amount is $8358.7 and the interest is $3858.7.

Step-by-step explanation:

Explanation

STEP 1: To find amount we use formula:

A=P(1+rn)n⋅t

A = total amount

P = principal or amount of money deposited,

r = annual interest rate

n = number of times compounded per year

t = time in years

In this example we have

P=$4500 , r=7% , n=2 and t=9 years

After plugging the given information we have

AAAA=4500(1+0.072)2⋅9=4500⋅1.03518=4500⋅1.857489=8358.7

STEP 2: To find interest we use formula A=P+I, since A=8358.7 and P = 4500 we have:

A8358.7II=P+I=4500+I=8358.7−4500=3858.7

4 0
3 years ago
)) A group of cyclists went bike riding during a 7-day vacation. They biked 129 miles in the
shtirl [24]

Answer:

41 miles a day

Step-by-step explanation:

293 - 129 = 164

164 / 4 = 41

5 0
2 years ago
Read 2 more answers
Find the value of x.<br> x = [?]
zubka84 [21]

Answer:

x = 14 units

Step-by-step explanation:

  • Distance of both the chords from the center of the circle is 9 units.

  • -> Both the chords are equal. (Chords equidistant from the center of the circle are equal)

  • Perpendicular drawn from the center of the circle bisects the chord.

  • -> Measure of one chord = 7 + 7 = 14 unit

  • -> Measure of the other chord = 14 units

  • -> x = 14 units
6 0
2 years ago
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