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swat32
3 years ago
9

Find the sum of 2/5 and 4/10

Mathematics
2 answers:
Aleksandr [31]3 years ago
4 0

hope so it will help, if so please mark me brainliest

chubhunter [2.5K]3 years ago
3 0

Answer:

2/5+4/10

first find the LCM =10

Mytiply both numerator and denominator to have the denominator same value 2×2/5×2 + 4×1/10×1=

4/10 + 4/10 add numerator 8 / 10 both number divisible by 2 answer is 4/5

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Leah is building a slide for her kids. if the latter is 7 feet tall and she wants the bottom of the slide to be 4 feet from the
nadezda [96]

The line needs to be 8.06 m long

Explanation

Given that the ladder is 7 feet tall and the bottom of the slide should be 4 m away from the ladder.

The ladder,slide and the ground connecting them makes the sides of a right angled triangle with ladder as the height and ground as the base.

base=4m

height=7m

hypotenuse can be determined using pythagoras law

b^{2} +h^{2} =H^{2} \\x^{2} 4^{2}+ 7^{2}= H^{2} \\16+49=H^{2} \\H=\sqrt{65} \\=8.06 m

4 0
3 years ago
Why is the answer A? Plz explain.
emmasim [6.3K]

Answer:


Step-by-step explanation:

the answer cannot be 5. Why? Because the minimum will occur when 12 and 5 point in opposite directions like both are on the x axis pointing to 0 from the east and pointing to zero coming from the west.

12 - 5 = 7

You cannot get a result less than that.

4 0
3 years ago
The frequency table shows the results of tossing a number cube 50 times. Which statement
Paul [167]

Answer:

Option (1) is the correct option.

Step-by-step explanation:

From the given frequency table,

Option (1).

Tossing an even number is more likely than tossing an odd number.

Frequencies of tossing even numbers 2, 4, 6 = 10, 10, 9

Frequencies of tossing odd numbers 1, 3, 5 = 8, 6, 7

Which shows frequencies of tossing even numbers are more.

Therefore, Option (1) is correct.

Option (2)

The number 2 will be the next number tossed.

Since it is unpredictable, therefore, this option is incorrect.

Option (3)

Number 4 is half as likely to be tossed as the number 3.

Frequency of tossing number 3 = 6

Frequency of tossing 4 = 10

Frequency of tossing 3 is not the half of tossing 4.

Therefore, Option (3) is incorrect.

Option (4)

Probability of tossing the number 2 = \frac{\text{Frequency of tossing 2}}{\text{Total frequency}}

                                                           = \frac{10}{8+10+6+10+7+9}

                                                           = \frac{10}{50}

                                                           = \frac{1}{5}

Therefore, option (4) is incorrect.

3 0
3 years ago
Lena took a test with 20 questions. She lost 5 points for each of the 12 questions she got incorrect, however, gained 20 points
Makovka662 [10]

Answer:

17

Step-by-step explanation:

6 0
3 years ago
23 - x = 142 ggghhgfff
Dafna1 [17]

Answer:

x=-119

Step-by-step explanation:

23-x=142

-23       -23

-x=119

switch the signs

x=-119

5 0
3 years ago
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