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zhuklara [117]
3 years ago
13

Brian skied for 0.75 hours at an average speed of 9.25 miles per hour. His sister Tori calculated the distance Brian skied. Tori

’s work is shown below. 9.25 times 0.75 = 4625. 4625 + 6475 = 11.090 miles. What errors did Tori make when solving the problem? all that apply.
A)She multiplied 5 and 925 incorrectly
B)She did not correctly align the place values of the partial products.
C)She did not place the decimal point correctly.
D)She added the partial products incorrectly.
Mathematics
2 answers:
mote1985 [20]3 years ago
7 0

B, C, and D. I took da test.

Darya [45]3 years ago
3 0

b, c, and d

are all of the answers

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It took bob 55min to clean the garage. How many seconds did it take bob.
Setler79 [48]
60x55= 3300 there are 60 seconds in a minute and there are 55 minutes so you simply multiply the seconds by the minutes
5 0
3 years ago
Read 2 more answers
1/4 + 1/2 + x = −3/4
Ostrovityanka [42]

1/4 + 1/2 + x = −3/4

get a common denominator 1/4

1/4 +2/4 +x = -3/4

combine like terms

3/4 +x =-3/4

subtract 3/4 from each side

x = -3/4 -3/4

x = -6/4

divide top and bottom by 2

x = -3/2

x = -1   1/2

Answer : x = -1  1/2

7 0
3 years ago
Read 2 more answers
Penelope determined the solutions of the quadratic function by completing the square. F(x) = 4x2 8x 1 –1 = 4x2 8x –1 = 4(x2 2x)
Ymorist [56]

By solving the quadratic equation using completing the square method we got that Penelope should have added 4 to both sides instead of adding 1.

<h3>What is quadratic equation ?</h3>

Any equation of the form ax^2+bx+c=0 where x is variable and a, b, and c are any real numbers where a ≠ 0 is called quadratic equation .

Given work of Penelope is

$$\begin{aligned}&f(x)=4 x^{2}+8 x+1 \\&-1=4 x^{2}+8 x \\&-1=4\left(x^{2}+2 x\right) \\&-1+1=4\left(x^{2}+2 x+1\right) \\&0=4(x+2)^{2} \\&0=(x+2)^{2} \\&0=x+2 \\&-2=x\end{aligned}$$

Now we can see that Penelope determined the solutions of the quadratic function by completing the square. so he must have been done as following

$$\begin{aligned}&f(x)=4 x^{2}+8 x+1 \\&-1=4 x^{2}+8 x \\&-1=4\left(x^{2}+2 x\right) \\&-1+4=4\left(x^{2}+2 x+1\right) \\&3=4(x+2)^{2} \\&\frac{3}{4} =x+2)^{2} \\&\frac{\pm\sqrt3}{2} =x+2 \\&\frac{-2\pm\sqrt3}{2} =x\end{aligned}$$

By solving the quadratic equation using completing the square method we got that Penelope should have added 4 to both sides instead of adding 1.

To learn more about quadratic equations visit : brainly.com/question/1214333

8 0
2 years ago
Imeldas jigsaw puzzle has 500 pieces. She estimates that she put togethe approximately 95 of the pieces.
tekilochka [14]

Answer:

19% done

81% left

Step-by-step explanation:

95/500=19

100-19=81

7 0
3 years ago
Please help me I'm sooooo stressed!!!! plz help
mrs_skeptik [129]

Answer:

with what you didnt say what you needed help with

Step-by-step explanation:

8 0
3 years ago
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