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1 year ago

7

Choose the property shown in 3 + 2 = 2 + 3

2 answers:

VikaD [51]1 year ago

6 0

This is known as the commutative property of addition.

Hope this helps!

suter [353]1 year ago

3 0

This would be the commutative property of addition
The commutative property of addition states that changing the order of addends does not change the sum.
Example: 3+5+6=6+5+3
Hope this helps!

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What is 76.3 rounded to the nearest whole number

MatroZZZ [7]

76.
If the number after the decimal is below five, you round down. If the number is above five, you round up. 76 is your answer.

6 0

2 years ago

AFLATI 2 NUMERE STIIND CA AL DOILEA NUMAR ESTE DE 7 ORI MAI MARE DECITPRIMUL IAR SUMA DINTRE DUBLUL PRIMULUI NUMAR SI TRIPLUL CE

postnew [5]

Answer:

The numbers are 20 and 140

Step-by-step explanation:

<u><em>The question in English is</em></u>

Find 2 numbers knowing that the second number is 7 times greater than the first, and the sum between the double of the first number and the triple of the second is 460

Define the variables

Let

x ----> the first number

y ----> the second number

we know that

$y=7x$ -----> equation A

$2x+3y=460$ ----> equation B

Solve the system of equations by substitution

Substitute equation A in equation B

$2x+3(7x)=460$

solve for x

$2x+21x=460$

$23x=460$

$x=20$

<em>Find the value of y</em>

$y=7x$ ----> $y=7(20)=140$

The numbers are 20 and 140

6 0

2 years ago

When solving a linear system by substitution, how do you decide which variable to solve first?

rosijanka [135]

Answer: whichever one is easiest to get by itself.

Step-by-step explanation:

7 0

2 years ago

The ratio of the measures of the three angles in a tangle 3107. Find the measures of the angles and write them in size order,

N76 [4]

Answer:

27, 90 and 63

Step-by-step explanation:

Given

Ratio of triangle sides

$Ratio = 3 : 10 : 7$

Required:

The length of each side

Triangles in a triangle add up to 180.

The side with ratio 3 is:

$S_1 = \frac{3}{3 + 10 + 7} *180$

$S_1 = \frac{3 *180}{20}$

$S_1 = \frac{540}{20}$

$S_1 = 27$

The side with ratio 10 is:

$S_2 = \frac{10}{3 + 10 + 7} *180$

$S_2 = \frac{10 *180}{20}$

$S_2 = \frac{1800}{20}$

$S_2 = 90$

Lastly:

The side with 7 as its ratio

$S_3 = \frac{7}{3 + 10 + 7} *180$

$S_3 = \frac{7 *180}{20}$

$S_3 = \frac{1260}{20}$

$S_3 = 63$

Hence, the angles are: 27, 90 and 63

5 0

2 years ago

* ANSWER PLS * What is the value of x?

uysha [10]

Answer: 21°

Step-by-step explanation:

Since angles DAE and CBE are inscribed on arc AC, they r equal

Hence angle CBE = 42°

So angle DAE = 42/2 = 21°

8 0

2 years ago