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IrinaVladis [17]

3 years ago

8

caroline bought 3/5 of a yard of purple fabric and 1/3 of a yard of yellow fabric. how much more purple fabric than yellow fabri

c did she buy?

1 answer:

soldier1979 [14.2K]3 years ago

5 0

Answer:

4/15 yards more

Step-by-step explanation:

3/5 - 1/3

5 and 3 have a common denominator of 15.

3/5 = 9/15 1/3 = 5/15

9/15 - 5/15 = 4/15

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At Daria's school 3/8 of students are left handed. If there are 320 students, how many of them are left handed

yKpoI14uk [10]

320/8= 40
40x3= 120
120 students are left handed

4 0

2 years ago

Select the property that is demonstrated by: 3+7=7+3

gizmo_the_mogwai [7]

Answer:

Commutative property of addition

Step-by-step explanation:

This is called the commutative property of addition which states that a + b = b + a. In this case, a = 3 and b = 7.

8 0

3 years ago

Read 2 more answers

Suzie drove her gravity-powered car in a race. Her winning time on the 325-meter course was 53.2 seconds.

MrRissso [65]

The answer is 6.11 m/s work included

6 0

2 years ago

Read 2 more answers

One hour on earth is four hours on planet S.

Andreas93 [3]

Answer:

The answer is 60 hours.

Step-by-step explanation:

We could use proportions to solve.

$\frac{1 \: hour \: on \: earth}{4hours \: on \: planet \: s} = \frac{x}{240hours \: on \: planet \: s}$

$4 \times x = 4x \\ 1 \times 240 = 240$

$\frac{4x}{4} = \frac{240}{4} \\ x = 60$

3 0

3 years ago

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

1 year ago