1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lakkis [162]
3 years ago
8

Solve equation by finding square roots. 49x^2 - 16= -7

Mathematics
1 answer:
TEA [102]3 years ago
8 0

Answer:

Solve equation by finding square roots. 49x^2 - 16= -7

49x²-16= -7

49x²= -7 + 16

49x²= 9

find the square root of both sides

7x= 3

x= 3/7

Step-by-step explanation:

You might be interested in
Please help!! giving brainlest , please be serious. due in a few minutes thanks!
Margaret [11]

The answer is -7

The arrows both point toward the left side, and sine there are seven spaces the arrows are going through, you subtract 7 spaces and get -7

Hope that helps.

7 0
3 years ago
Read 2 more answers
Solve the following quadratic equation 6x^2-5x-4=0
jeka94

Answer:

=

−

±

2

−

4

√

2

x=\frac{-{\color{#e8710a}{b}} \pm \sqrt{{\color{#e8710a}{b}}^{2}-4{\color{#c92786}{a}}{\color{#129eaf}{c}}}}{2{\color{#c92786}{a}}}

x=2a−b±b2−4ac​​

Once in standard form, identify a, b, and c from the original equation and plug them into the quadratic formula.

6

2

−

5

−

4

=

0

6x^{2}-5x-4=0

6x2−5x−4=0

=

6

a={\color{#c92786}{6}}

a=6

=

−

5

b={\color{#e8710a}{-5}}

b=−5

=

−

4

c={\color{#129eaf}{-4}}

c=−4

=

−

(

−

5

)

±

(

−

5

)

2

−

4

⋅

6

(

−

4

)

√

2

⋅

6

Step-by-step explanation:

6 0
3 years ago
Given: F(x) = 2x - 1; G(x) = 3x + 2; H(x) = x 2 Find F[G(x)] - F(x). 4x + 4 4x + 2 4x
Allushta [10]

Answer:

4x + 4

Step-by-step explanation:

F(x) = 2x - 1

G(x) = 3x + 2

H(x) = x²

We have to calculate the expression F(G(x)) - F(x)

F(G(x)) means the composition of functions F(x) and G(x). In order to find F(G(x)) we have to replace ever occurrence of x in F(x) with the value of G(x). So,

F(G(x)) = 2(3x+2) - 1 = 6x + 4 - 1 = 6x + 3

Thus,

F(G(x)) - F(x) = 6x + 3 - (2x - 1)

= 6x + 3 -2x + 1

= 4x + 4

Therefore, the expression F(G(x)) - F(x) equals 4x + 4

4 0
3 years ago
If Log x (1 / 8) = - 3 / 2, then x is equal to.<br><br> A. - 4<br> B. 4<br> C. 1 / 4<br> D: 0
Softa [21]

log_{x}(1/8)=-3/2

This is equal to...

x^{-3/2}=1/8

We want "x" so we need to isolate it using laws of exponents...

x^{(-1)(3/2)}=1/8

x^{3/2}=8 because x^{-a}=1/x^{a}

x=\sqrt[3]{8^{2}} because x^{a/b}=\sqrt[b]{x^{a}}

x = 4

answer: B

5 0
3 years ago
Calculate the amount in an account after one year that starts with the principal listed below and pays the specified rate of int
lina2011 [118]

Answer:

D

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • The length of PQ is<br> The midpoint of PQ is m(_,_)
    14·1 answer
  • Write an inequality, in slope-intercept form, for the graph below. to get you started y&gt;=​
    15·1 answer
  • 639.497 rounded to the nearest tenth
    11·1 answer
  • Please answer this quick in quetion 1. answer and 2. answer and 3.answer thank you please answer under 5 minutes i dont have tim
    14·1 answer
  • I need this to be explained and have the answer thanks I AM BEGGING YOU!!!!!!!!!!!!
    15·1 answer
  • Select all the common denominators for
    14·1 answer
  • Sonny's band rehearsal started at 10:30 A.M. It ended 1 hour and 40 minutes later. At what time did Maya's band rehearsal end?
    5·1 answer
  • Vicky is renting an apartment.In addition to the first month’s rent, the landlord requires him to pay half of a month's rent as
    15·2 answers
  • Jamie receives 15% commission on magazine subscriptions. One week her sales totaled $860. What was her commission?
    12·1 answer
  • Dorit wants to make farmer’s cheese. She knows that for 2 gallons of milk, she will need 14 teaspoon of rennet. She only has 12
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!