I have 1/2-1/7 and3/5-1/2

Answers

Answer 1

Answer: $(1)/(2)-(1)/(7)=\ \ \ | make\ common \denominator\n\n(7)/(14)-(2)/(14)=(7-2)/(14)=(5)/(14)\n\n(3)/(5)-(1)/(2)= \ \ \ | make\ common \denominator\n\n (6)/(10)-(5)/(10)=(1)/(10)$

Answer 2

Answer: 1/2 - 1/7 = 7/14 - 2/14 = 5/14
3/5 - 1/2 = 6/10 - 5/10 = 1/10

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Suppose you go shopping for a new futon bed for your room. The model you really like happens to be on sale for $425. It's original price is $500. What percent of the original price will you save if you purchase it?
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Select the true statement about triangle ABC. Need answer asap

Answers

Answer: The correct option is

(B) $\sin C=\cos A.$

Step-by-step explanation: We are given to select the true statement about the triangle ABC shown in the figure.

From the figure, we note that

triangle ABC is right-angled at angle B, where hypotenuse, AC = 13, BC = 5 and AB = 12.

From the trigonometric ratios, we have

$\sin A=\frac{\textup{perpendicular}}{\textup{hypotenuse}}=(BC)/(AC)=(5)/(13),\n\n\n\cos A=\frac{\textup{base}}{\textup{hypotenuse}}=(AB)/(AC)=(12)/(13),\n\n\n\cos B=\frac{\textup{base}}{\textup{hypotenuse}}=(BC)/(AC)=(5)/(13),\n\n\n\sin C=\frac{\textup{perpendicular}}{\textup{hypotenuse}}=(AB)/(AC)=(12)/(13),\n\n\n\sin A=\frac{\textup{perpendicular}}{\textup{hypotenuse}}=(BC)/(AC)=(5)/(13),\n\n\n\tan A=\frac{\textup{perpendicular}}{\textup{base}}=(BC)/(AB)=(5)/(12).$

Therefore, we get

$\sin C=\cos A.$

Thus, option (B) is CORRECT.

B. sinC= cosA
Remember SohCahToa.
The sine is equal to opposite/hypotenuse and cosine is equal to adjacent over hypotenuse.
The sine of C is 12/13 and the cosine of A is 12/13.

The graph shows Linda's math scores versus the number of hours spent doing math homework.What will most likely be Linda's approximate math score if she does math homework for 7 hours a week?

A. 62.5 Points

B.77.5 Points

C. 82.5 Points

D.93.5 Points

Answers

Answer:

The approximate score is:

Option: A

A. 62.5 points.

Step-by-step explanation:

Clearly from the graph we could observe that the line of best fit passes through (0,10) and (4.5,45).

Now we find the equation of line of best fit with the help of formula that is used to find the equation of a line passing through (a,b) and (c,d) as:

$y-b=(d-b)/(c-a)* (x-a)$

Here we have:

(a.,b)=(0,10) and (c,d)=(4.5,45)

Hence, the line of best fit is given as:

$y-10=(45-10)/(4.5-0)*(x-0)\n\ny-10=(35)/(4.5)* x\n\ny-10=(70)/(9)* x\n\ny=(70)/(9)* x+10$

Now we are asked to find the math score if she does math homework for 7 hours a week i.e. we have to find the value of y when x=7.

Hence, we put x=7 in the equation to obtain y as:

$y=(70)/(9)* 7+10\n\ny=(490)/(9)+10\n\ny=64.44$

Hence, the approximate score is:

Option: A

A. 62.5 points.

Answer=A

Let's write the an equation in slope intercept for for the line.

y-intercept=10

slope=rise/run=15/2=7.5

equation:

y=mx+b
y=7.5x+10

Solve for x=7

y=7.5(7)+10
y=52.5+10
y=62.5

Answer=A

four friends equally shared the cost of supplies for a picnic.the supplies cost 12.50.how much did they each spend

Answers

3.125 is your answer. I hope this helped.

The sale price of a bicycle is $120. This is 75% of the original price. Find the original price

Answers

120$ is 75% , so what is 120$'s 100% ?

120 divided by 75 = 1.6
1.6 multiplied by 100 = 160 $

The original price is 160$.

WILL GIVE BRAINLIST ive seen this problem so many times and I've tried my best to solve it but I really need some help here

Answers

Answer:

m ABC = 270°

Step-by-step explanation:

Note that the measure of the circle = 360°

m CA = 90°, thus

m ABC = 360° - m CA = 360° - 90° = 270°

Answer:

Let O be the center of the circle.

<COA = 90*

<FOE = <AOB = 146*

Considering that a circle is 360* we have <BOC = 124*

The Arc ABC is <AOB + <BOC = 124 + 90 =214*.

18 is 20℅ of what of number?

Answers

18 is 20% of 90

Change the percentage into a decimal by dividing it over 100:
$(20)/(100) = 0.2$

Divide 18 by 0.2:
$(18)/(0.2) = 90$

18 is 20% of 90.
18/90= 0.2 OR 20%

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