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3 years ago

True or False? Tell whether the pair of ratios form a proportion. 4/5 and 5/6 Please explain why you chose what you chose

Mathematics

1 answer:

ivann1987 [24]3 years ago

7 0

Answer:

False. The products from cross multiplication are different.

Step-by-step explanation:

To know if a pair of ratios form a proportion, cross multiply. If the products are equal, they are a proportion.

Write like this to see top (numerator) and bottom (denominator) clearly.

$\frac{4}{5} =\frac{5}{6}$

Multiply each numerator with the other side's denominator:

4 X 6 = 24

5 X 5 = 25

Are they equal? No. 24 ≠ 25

Therefore it's not a proportion.

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Find the absolute value of lk-8l=8 PLS ANSWER BEFORE 6:00 TODAY TY

Bingel [31]

It's 7:58 here.

|k-8|=8

k-8 = 8 or -(k-8)=8

k=16 or -k+8=8

k=16 or k=0

check:

|0-8|=|-8|=8 good

|16-8|=|8|=8 good

Answer: k=16 or k=0

5 0

3 years ago

The exact value of cos5pi/12 is:

jonny [76]

Step 1: Convert $\frac{5\pi }{12}$ , which is in radians into degrees. To convert it multiply by $\frac{180}{\pi }$

$\frac{5\pi }{12} =\frac{180}{\pi }$

900/12

Step 2: 75 degrees isn't on the unit circle but 45 degrees and 30 degrees is. Since 45 + 30 = 75 you can use the cosine of 45 and 30 to find the exact value

cos45 = $\frac{\sqrt{2} }{2}$

cos30 = $\frac{\sqrt{3} }{2}$

Step 3: Add the cos45 and cos30 to get cos5pi/12

$\frac{\sqrt{2} }{2} +\frac{\sqrt{3} }{2} = \frac{\sqrt{2}+\sqrt{3}}{2}$

Hope this helped!

4 0

3 years ago

Zak buys 6 gallons of fruit punch. He has coupons for $0.55 off the regular price of

kherson [118]

Answer:

$2.00

Step-by-step explanation:

If Zak is Buying 6 gallons, and he has a coupon for each gallon for $0.55 off, we need to first find how much he saved.

We can do this by calculating $0.55 (or 0.55) multiplied by 6. This answer is 3.30, or $3.30.

Now we add $3.30 to $8.70 to get the normal price for 6 gallons of fruit punch.

3.30 + 8.70 = 12.00, or $12.00

The normal price for 6 gallons of fruit punch is $12.00.

Now, we divide 12 by 6 to get the cost of one single gallon of fruit punch.

12/6 = 2

One gallon of fruit punch costs $2.00

Hope this helps! Have a great rest of your day! :)

7 0

2 years ago

Write two division problems related to the multiplication problem below. 8×(-2)=-16

Alenkasestr [34]

To solve this problem, we must remember that division is the inverse operation of multiplication. This means to undo any multiplication problem, we can divide.

Because 8 * -2 = -16, if we divide the product by the two factors, we can reveal this unique relationship, as shown below:

-16/-2 = 8

-16/8 = -2

Therefore, the two division problems above are your answer.

Hope this helps!

3 0

2 years ago

Find the value of x in the model. Key x = 2 x = -2 x = 4 x = -4

egoroff_w [7]

Answer:

I believe that corect answer is x=2

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

True or False? Tell whether the pair of ratios form a proportion. 4/5 and 5/6 Please explain why you chose what you chose​

True or False? Tell whether the pair of ratios form a proportion. 4/5 and 5/6 Please explain why you chose what you chose