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3 years ago

8

4/5z=16 solve equation (that's a fraction )

1 answer:

Assoli18 [71]3 years ago

6 0

So we need to isolate the variable. In order to do that, we need to multiply both sides by 5/4.
Why? That's so that 4/5z will be canceled out when multiplied by 5/4 to get just z.
And so, we would get 20 as our answer.

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In a population of 271 Dd parrots, predators kill 55. What is the approximate fitness of the genotype?

MissTica

Answer:

60%

Step-by-step explanation:

well i domt really know how to explain it ngl

7 0

4 years ago

Two cars start from the same point and move in a straight line, one east at a speed of 60 km per hour and the other west at a sp

Flauer [41]

Answer:

5.5 hours

Step-by-step explanation:

Given that :

Speed of A = 60 kmphr

Speed of B = 80 kmphr

After what time will distance = 770 km

Speed * Time = Distance

Let time = x

Distance A + Distance B = 770

(60 * x) + (80 * x) = 770

60x + 80x = 770

140x = 770

x = 770 / 140

x = 5.5 hours

4 0

3 years ago

A box of 24 greeting cards is sold at a gift shop for $3.00. The cost to the store is $2.40. What is the markup as a percentage

Vinvika [58]

Answer:

25%

Step-by-step explanation:

formula for percent markup/discount= absulute value of original-new/original

plug the numbers is

(2.40-3.00/2.40) absolute value=0.25

0.25 as a percent is 25%

3 0

4 years ago

How do you do this? Please help

PtichkaEL [24]

Answer:

$PO=86.2\\ OM=23.8\\$

Step-by-step explanation:

To preface, your figure is going to be a line segment, with $O$ as your midpoint, in between points $P$ & $M.$

With that being said:

$PO+OM=PM$

Identify your values:

$PO=7y+12\\OM=3y-8\\PM=110$

Substitute the values into the first equation:

$7y+12+3y-8=110$

Combine like terms:

$10y+4=110$

Subtract $4$ from both sides of the equation:

$10y=106$

Divide by the coefficient of $y$ , which is $10$ :

$y=10.6$

Substitute $10.6$ for $y$ in segments $PO$ & $OM$ :

$PO=7(10.6)+12$

$OM=3(10.6)-8$

$PO=74.2+12$

$OM=31.8-8$

Solve:

$PO=86.2$

$OM=23.8$

Check your answers by substituting:

$PO+OM=PM$

$86.2+23.8=110$

8 0

4 years ago

Divide a given line segment into four congruent parts. Bisect once and then bisect again the obtained half segments.

Bingel [31]

Answer and Step-by-step explanation:

"Bisect" essentially means to cut in half. Here, since we are bisecting three times, we will have 4 equal pieces.

See the attachment. The red "x" just denote the fact that all 4 segments are the same length x.

Hope this helps!

7 0

3 years ago

Read 2 more answers