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Nastasia [14]
3 years ago
9

Adding and subtracting fractions. 3/10 - (-1/4) =​

Mathematics
2 answers:
I am Lyosha [343]3 years ago
7 0
It equals 11/20 or in decimal 0.55
kenny6666 [7]3 years ago
5 0

Answer:

11/20 or in decimal form 0.55

Step-by-step explanation:

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I will give Brainliest its maths and I need help on a b and c
JulsSmile [24]

Answer:

{5}^{3}  \times  {5}^{x}  =  {5}^{7}  \\ 3 + x = 7 \\ x = 4

( {q}^{2} )^{y}  =  {q}^{6}  \\ 2y = 6 \\ y = 3

{1000}^{m}  \div  {100}^{n} =  {10}^{z}   \\  \frac{1000 ^{m} }{ {100}^{n} }  =  {10}^{z}  \\   \\ {10}^{m - n}  =  {10}^{z}

Can I have the brainliest please?

4 0
3 years ago
Read 2 more answers
A student answer 86 problems on a test correctly and received a grade of 98% how many problems were on the test if all the probl
adoni [48]

Answer:

87 or 88

Step-by-step explanation:

86 is 98% of 87.755102

So, the number of problems must have been 87 or 88

6 0
2 years ago
The measure of an angle is 78°. What is the measure of a complementary angle?
ki77a [65]
First you need to know the definition of a complementary angle. That means that two angles add up to 90 degrees, or a right angle.

To find an angle complementary to a 78 degree angle, you need to subtract 78 from 90. 

90 - 78 = 12
6 0
3 years ago
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The scale on a map says that 2 inches = 150 miles. If two cities are actually 325 miles apart, how many inches apart will they b
vodomira [7]
150/2= 75(that is the diff)
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4 0
3 years ago
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0.4(2x-9)-0.6(4x+5)=
masha68 [24]

Answer:

From what I can comprehend I believe the answer is <em>3.2x + -4</em>

Step-by-step explanation:

0.4(2x-9) = 0.8x - 9

0.8x - 9 - 0.6(4x+5)=

0.8x - 9 + 2.4x+5

0.8+2.4 = 3.2x

-9 + 5 = -4

3.2x + -4

5 0
3 years ago
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