Round 49.38 to nearest ten

Answers

Answer 1

Answer: 49.38 to the nearest tenth is 49.4

Hope I helped!

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How do you solve substitution to solve the sytem
x+y=2
-2x+y=2

Answers

so you want to make one of the equations equal to one of the placeholders exg y=x+3

so we have
x+y=2 and
-2x+y=2

I chose to make -2x+y=2 equal to y so
-2x+y=2
add 2x to both sides
y=2+2x

subsitute 2+2x for y in x+y=2
x+2+2x=2
add like terms
3x+2=2
subtract 2 from both sides
3x=0
x=0

subsitute x=0 in x+y=2
0+y=2
y=2

x=0
y=2

separate one variable in either equation, so for example:

x=-y+2
-2x+y=2

(if you dont know how to do that, tell me)

now that you have the variable separated, you can substitute the top equation in for the x in the second equation like this

-2(-y+2)+y=2

and now use the distributive property to get:

2y-4+y=2

and just combine like numbers.....

3y-4=2

and if you dont know how to solve it from here, comment to tell me but the rest of the problem would go like this:

3y-4=2
+4 +4

3y=6
/3 /3

y=2

and then you take this y and plug it back into one of the original two equations waaayy up at the top like this:

x+2=2

and solve...

x+2=2
-2 -2

x=0

so your final answer is (0,2)! Hope this helps!

A store sells a gallon of milk for $3.A baker buys 30 gallons of milk for his bakery.How much will he have to pay?

Answers

$3 x 30 gallons of milk = $90

90 because 30 x 3 = 90

What is the reciprocal of (1/7)?

Answers

Answer:

0.14285714285

Step-by-step explanation:

pls mark as brainliest!!!

Answer:
7

Explanation:
The reciprocal of a number is to switch the numerator and denominator. In (1/7), the numerator is 1 and the denominator is 7. A fraction is always numerator/denominator. So, when (1/7) is flipped, the fraction’s reciprocal is (7/1) which is simplified to 7.

Jerry wonders "how many $10 bills are equal to a $1,000 bill?

Answers

100 bills, Jerry.
Jerry: " BUT WHY? "
Excellent question, Jerry, you forward thinker.
Well....
10x1=10
10x10=100
See how the product has the same number of zeros as the actual problem?
Look:
10x100 has 3 zeros.
The product is 1,000, which ALSO has 3 zeros.
So, to save yourself the trouble, just count the zeros.
Jerry: " WOW I GET IT NOW!"
AND SO SHOULD YOU AFTER READING THIS! :)

Whats the surface area of this prism plz help.Urgent

Answers

Answer:

The surface area of a solid object is a measure of the total area that the surface of the object occupies. The mathematical definition of surface area in the presence of curved surfaces is considerably more involved than the definition of arc length of one-dimensional curves, or of the surface area for polyhedra (i.e., objects with flat polygonal faces), for which the surface area is the sum of the areas of its faces. Smooth surfaces, such as a sphere, are assigned surface area using their representation as parametric surfaces. This definition of surface area is based on methods of infinitesimal calculus and involves partial derivatives and double integration.

Step-by-step explanation:

136 squared whatever’s

H divided by 9 =14?

Answers

That answer will be 126.

In order to get this answer you must multiply 9 by 14 which is 126 then you check it by dividing 126 by 9 you get 14.

Final answer is 126

Hopes it Helps :]

126 because 14 times 9 = 126

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