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3 years ago

Determine whether x=1 and y=10 is a solution to the equations

Mathematics

1 answer:

Kay [80]3 years ago

4 0

Answer:

They are not solutions

Step-by-step explanation:

To see if it is correct we have to substitute the variables for the numbers given.

x+3=30

1+3≠30

2x-y=9

2·1-10≠9

So, these solutions would be incorrect.

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1. You and your friend are going to Boston but

Nataly [62]

Answer:

speed acquired by me = 40 miles / hour

speed acquired by my friend = 50 miles / hour

Step-by-step explanation:

Here's the solution :-

time taken by both = 6 hours

( 10 AM - 4 PM )

1. Now, the required speed for me to reach boston at 4 PM is :

=》

$\frac{distance}{time}$

=》

$\frac{240}{6}$

=》

$40 \: mph$

2. Now, the required speed for my friend to reach boston at 4 PM is :

=》

$\frac{distance}{time}$

=》

$\frac{300}{6}$

=》

$50 \: mph$

3 0

2 years ago

I need both answers

Delvig [45]

Answer:

10mn -35m

8rs-2r^2+16r

they are in order.

7 0

3 years ago

Read 2 more answers

You design a tree house using a coordinate plane in which the coordinates are measured in feet. The vertices of the floor are (-

Nikitich [7]

Answer:

Perimeter = 28 yards

Area = 49 square yards.

Step-by-step explanation:

Distance formula:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Let as consider the vertices of the floor are A(-2,-3), B(-2,4), C(5,4) and D(5,-3).

Using distance formula, we get

$AB=\sqrt{(-2-(-2))^2+(4-(-3))^2}=\sqrt{(-2+2)^2+(4+3)^2}=\sqrt{0+7}^2=7$

Similarly,

$BC=\sqrt{(5-(-2))^2+(4-4)^2}=7$

$CD=\sqrt{(5-5)^2+(4-(-3))^2}=7$

$AD=\sqrt{(5-(-2))^2+(-3-(-3))^2}=7$

It is conclude that, $AB=BC=CD=AD$ .

From the given points it is clear that all sides lie on either vertical or horizontal lines.

Since all sides are equal, and adjacent sides are perpendicular, therefore, the base is a square with edge 7 yards.

Perimeter of square floor is

$P=4a=4(7)=28\text{ yards}$

Area of square floor is

$A=a^2=7^2=49\text{ sq. yards}$

Therefore, the perimeter is 28 yards and the area is 49 square yards.

7 0

3 years ago

An irrational number between -2 and -1<br><br> a rational number between -2 and -1

leva [86]

Answer:

An irrational number between -2 and -1 would be $\frac{-\pi }{2}$

A rational number between -2 and -1 would be -1.5

Step-by-step explanation:

$\frac{-\pi }{2}$ = -1.570796... This number does not have repeating decimals, patterns, and it isn't a terminating decimal. It is irrational.

-1.5 is a terminating decimal, therefore it is rational, as well as between -2 and -1.

6 0

2 years ago

How much its 5+3+3×15=

AveGali [126]

=5 + 3 + 3 * 15
do multiplication first
=5 + 3 + 45
=8 + 45
=53

ANSWER: 53

Hope this helps! :)

7 0

3 years ago

Read 2 more answers