All categories

2 years ago

PLEASE HELP I GIVE THANKS

Mathematics

1 answer:

MaRussiya [10]2 years ago

7 0

first one is <u>=,</u><u /> second is <u>C,</u><u /> third is <u>B</u>

You might be interested in

Erynn glued k seashell on a photo frame. She made 5 such photo frames. How many seashells did she use?

salantis [7]

Seashells glued on 1 photo frame = k

So, seashells glued on 5 photo frame

= Seashells glued on 1 photo frame × 5

= k × 5

= 5k

So, Erynn used 5k seashells.

3 0

2 years ago

What number should be added to both sides of the equation to complete the square?

omeli [17]

-6. its to make the equation equal

4 0

2 years ago

Read 2 more answers

help with this !!!!!!!!!!!!!!!!!!!!

Gnom [1K]

Answer:

Using Pythagorean theory : a²+9²=15²

=> a²=225-81=144

=> a = √144 = 12

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

The difference of a number x and 4 is 3

Kruka [31]

"the difference of a number x and 4": x - 4
"is": =
"3": 3

Combine the terms so that it looks like the sentence numerically:

"the difference of a number x and 4 is 3": x - 3 = 4

x - 3 = 4 is your answer.

To solve for x:

Note the equal sign, what you do to one side, you do to the other. Isolate the variable, x. Add 3 to both sides.

x - 3 = 4

x -3 (-3) = 4 (-3)

x = 4 - 3

x = 1

1 is your answer for x.

~

~

6 0

3 years ago

Solve the system of equations using substitution and Elimination

juin [17]

<h2>Greetings!</h2>

Answer:

y = $\frac{-18}{7}$ and x = $\frac{50}{7}$

Step-by-step explanation:

To solve simultaneous equations, you need to have the number in front of both x's or y's the same. (signs doesn't matter)

To get -x to -10x we simply need to multiply the first equation by 10:

-x * 10 = -10x

-9y * 10 = -90y

16 * 10 = 160

-10x - 90y = 160

Now we can add the two equations:

-10x + 10x = 0

-90y + 20y = -70y

160 + 20 = 180

-70y = 180

70y = -180

7y = -18

y = $\frac{-18}{7}$

Now plug $\frac{-18}{7}$ into the second equation:

10x + 20( $\frac{-18}{7}$ ) = 20

10x - $\frac{360}{7}$ = 20

Move the $\frac{360}{7}$ over to the other side, making it a positive:

10x = 20 + $\frac{360}{7}$

10x = $\frac{500}{7}$

Divide both sides by 10:

x = $\frac{50}{7}$

So y = $\frac{-18}{7}$ and x = $\frac{50}{7}$

<h2>Hope this helps!</h2>

5 0

2 years ago