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antiseptic1488 [7]
3 years ago
7

Use the square root property to solve the Quadratic Equation. x2 = -49

Mathematics
2 answers:
Novay_Z [31]3 years ago
4 0

Answer:

no real solution

Step-by-step explanation:

no real solution

Margaret [11]3 years ago
4 0

Answer:

-7

Step-by-step explanation:

x2 divide-2 =x  -49 divide by 2 =

x=-7

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Beau made a new hamster house for Dr.cheeks out of 125.5 craft sticks. each stick weighs 0.5 ounce. How much does the hamster ho
andrezito [222]

Answer:

62.75 ounces

Step-by-step explanation:


6 0
3 years ago
Read 2 more answers
Could someone please help me? Thank you and explain the work because I don’t get this
lesya [120]

Answer:

5.59 times per second.

Step-by-step explanation:

Direct variation is in the form:

y=kx

Where <em>k</em> is the constant of variation.

Inverse variation is in the form:

\displaystyle y=\frac{k}{x}

In the given problem, the frequency of a vibrating guitar string varies inversely  as its length. In other words, using <em>f</em> for frequency and <em>l</em> for length:

\displaystyle f=\frac{k}{\ell}

We can solve for the constant of variation. We know that the frequency <em>f</em> is 4.3 when the length is 0.65 meters long. Thus:

\displaystyle 4.3=\frac{k}{0.65}

Solve for <em>k: </em>

<em />k=4.3(0.65)=2.795<em />

<em />

So, our equation becomes:

\displaystyle f=\frac{2.795}{\ell}

Then when the length is 0.5 meters, the frequency will be:

\displaystyle f=\frac{2.795}{.5}=5.59\text{ times per second.}

5 0
3 years ago
n a jar of coins, the ratio of nickels to dimes is 5:7. If the jar contains 350 dimes, how many nickels are there?
irina1246 [14]

Answer:

250 nickles

Step-by-step explanation:

Nickles and dimes are coins with different currency values. One nickel(N) is equal to 5 cents while one dime(D) is equal to 10 cents. The ratio of nickel:dime is 5:7, to put into the equation it will be:

N/D= 5/7

7N=5D   ---> 1st equation

There are 350 dimes, the equation will be:

D=350   ----> 2nd equation

We can find out the number of nickels by substitute the 2nd equation into the first. The calculation will be

7N=5D

N= 5D/7

N=5(350)/7

N=  250

4 0
4 years ago
If x=5^a, find the value of 5x. How?
Yakvenalex [24]

Answer:

5x = 5^{(a+1)}

Step-by-step explanation:

Here is a problem with the concept of properties of the exponent.

We are given x = 5^{a} and we have to find the value of 5x.

Now, 5x = 5 \times 5^{a} {Since we are given that x = 5^{a}}

⇒ 5x = 5^{1} \times 5^{a} {Since we can write x = x^{1}}

⇒ 5x = 5^{(a+1)} {Since we know the formula of exponent as x^{m} \times x^{n} = x^{(m + n)}}

(Answer)

7 0
3 years ago
9 1/6 divided by 5/6
AnnZ [28]

Rewrite 9 1/6 divided by 5/6 as follows:

 55      6

 ---- * -----

   6      5

Reducing this produces the desired quotient, 11.

8 0
3 years ago
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