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navik [9.2K]
3 years ago
7

Which steps are needed to solve this equation?

Mathematics
2 answers:
AleksAgata [21]3 years ago
8 0

Answer:

Subtract 21 from the left side and add 21 to the right side of the equation.

The answer is b = 198.

Check the solution by substituting 198 for b.

Step-by-step explanation:

nata0808 [166]3 years ago
4 0

Answer:

d

Step-by-step explanation:

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An object travels 8 miles in 20 minutes at a constant speed. What is the
strojnjashka [21]

Answer: 24miles/hour

Step-by-step explanation: Speed is the change in distance of a body with respect to time.

Speed = Distance/tIme

Given parameters

Distance = 8miles

TIME = 20minutes

Convert minutes to hour

since 60minutes = 1hr

20 min = x

cross multiply

20 = 60x

x = 20/60

x = 1/3

Hence 20mins = 1/3 hr

Speed = 8miles/(1/3)hr

speed = 8 miles * 3/1 hr

speed = 24 miles/hr

6 0
3 years ago
What is the y-intercept of the graph of y = 3x^2 – 6x – 8?<br> –8 <br> –6<br> 1<br><br> 3
Shkiper50 [21]

<span>y-intercept: set x=0 </span>

<span>y = 3(0)^2 - 6(0) - 8 </span>

<span>y = -8 </span>

<span>x-intercept: set y=0 </span>

<span>0 = 3x^2 - 6x - 8</span>
4 0
3 years ago
Please Help! Thanks!
svetlana [45]

Answer:

C, 20 units

Step-by-step explanation:

We see that both angles QRS and QTR are 90 degrees. In addition, angles SQR and RQT are equivalent (because they're both angle Q).

By AA Similarity, we know that triangle QTR is similar to triangle QRS.

With this similarity in mind, we can look at the ratios of corresponding lengths to set up a proportion. QR from triangle QTR is the hypotenuse, and it corresponds to hypotenuse QS from triangle QRS. So, we can write the ratio x/(9 + 16) = x/25.

Now, we see that long leg QT of triangle QTR corresponds to long leg QR of triangle QRS. So, another ratio we can write is: 16/x.

Finally, we set these two ratios equal to each other:

\frac{x}{25} =\frac{16}{x}

Cross-multiplying, we get: x^{2} =16*25=400.

Thus, x = \sqrt{400} =20. The answer is C, 20 units.

Hope this helps!

4 0
3 years ago
Read 2 more answers
Which of these values is farthest from zero 0.75 -0.4 -2/3 7/8
Vilka [71]

The answer is 7/8. when converted into decimal , it becomes 0.8 something which is greater than all and so farthest from 0

4 0
3 years ago
Read 2 more answers
What is the minimum number of binary bits needed to represent each of the following unsigned decimal integers? a. 65
professor190 [17]

Answer: N >/= 7 bits

Minimum of 7 bits

Step-by-step explanation:

The minimum binary bits needed to represent 65 can be derived by converting 65 to binary numbers and counting the number of binary digits.

See conversation in the attachment.

65 = 1000001₂

65 = 7 bits :( 0 to 2^7 -1)

The number of binary digits is 7

N >/= 7 bits

7 0
3 years ago
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