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3 years ago

Can someone help me on this please.

Mathematics

1 answer:

Andrei [34K]3 years ago

6 0

Ok so when u do this you have to put alottttt

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The following ordered pairs form polygon WXYZ:

djverab [1.8K]

It's c. ZY have the same y and WX have the same y value. so they'll never touch

8 0

3 years ago

78.50=1.50x+.50y when x+y=87

Arlecino [84]

Answer:

Solution is (35,52)

Step-by-step explanation:

Step 1: Rewrite x+y=87

y= -x+87

Step 2: Substitute y=-x+87 into original equation and solve for x.

x=35

Step 3: Substitute value of x (35) and solve for y.

y=52

6 0

3 years ago

the speed of a stream is 4mph. If a boat travels 92 miles downstream in the same time that it takes to travel 46 miles upstream,

Elanso [62]

Answer:

12 miles per hour

Step-by-step explanation:

Let speed of boat in still water be "x"

and speed of current be "c"

So, downstream rate would be "x + c"

And, upstream rate would be "x - c"

Now, given c = 4

We can use the distance formula, D = RT, where

D is distance, R is rate, and T is time

to solve this.

Downstream:

D = RT

92 = (x+4)(t)

Upstream:

D = RT

46 = (x-4)(t)

Both the times are same, we can equate both the times. Lets simplify first:

t = 92/(x+4)

and

t = 46/(x-4)

Equate:

$\frac{92}{x+4}=\frac{46}{x-4}$

Now, cross multiply and solve for x to get our answer:

$\frac{92}{x+4}=\frac{46}{x-4}\\92(x-4)=46(x+4)\\92x-368=46x+184\\46x=552\\x=12$

Speed of Boat (in still water) = 12 mph

6 0

3 years ago

janey like to sleep for 9 hours 45 mins every night. On Monday she needs to be in bed to wake up at 7.25am what time does she ne

Temka [501]

The answer would be that janey would have to go to bed at 9:40pm

4 0

4 years ago

Write the meaning of each algebraic expression. Then, evaluate the algebraic expression for the given value. 5x - 4 if x= 3

shusha [124]

Answer:

$11$

Step-by-step explanation:

$5 \times x - 4$

$5 \times 3 - 4$

$15 - 4$

$11$

7 0

3 years ago