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lana [24]
3 years ago
11

Help me please thanks

Mathematics
2 answers:
andrezito [222]3 years ago
7 0
= 3 + √(9+7) - √(3*9)
= 3 + √16 - √27
= 3 + 4 - 3√3
= 7 - 3√3

answer
B.   7 - 3√3
8090 [49]3 years ago
7 0
Do both variables. 

Here, we have 3 + √16-√21.

The square root of 16 is 4. (3 + 4 - √21)

Simplify. 7 - √21.

Square root of 21 is 4.5

7 - 4.5 = 2.4

Round. 2

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Can someone help me with this problem?
Anika [276]
16 : 80
x : 100

Cross multiply.

80× = 100×16
× = 100 × 16 /80
× = 20 grams.

His allowance is 20g of saturated fat.
4 0
3 years ago
Question 18
Stels [109]

The system of linear equations that best represents the situation are:

z+y=18

3z +2y=44

<h3>What are the linear equations?</h3>

In order to determine the values of the two types of cheese, two set of linear equations can be formed from the question. The equations have to be solved together using either the elimination , substitution or graphical methods.

To learn more about simultaneous equations, please check: brainly.com/question/25875552

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8 0
1 year ago
X and y are two positive numbers and y is three greater than x. the product of the numbers is 130. find the smaller number, x.
blagie [28]
Xy=130
y=3+x

x(3+x)=130
x²+3x-130=0
(x+13)(x-10)=0
x= -13 or 10

since the question says X and Y are positive we just dismiss-13

x=10
and y=13
7 0
3 years ago
Convert the fraction into a decimal number.<br><br> 1.14286...<br> 0.875<br> 0.8...
Alex17521 [72]

Answer:

do u mean decimal to a fraction

6 0
3 years ago
The Cooper family, consisting of 6 children and 2 adults, goes to the movies and pays a total of $86. The Griffen birthday party
Oksanka [162]

Answer: The cost of child's ticket = $10

The cost of adult ticket = $ 13

Step-by-step explanation:

Let x be the cost of a child ticket and y be the cost of an adult ticket.

Then According to the question, we have

6x+2y=86..........................(1)\\\\10x+3y=139.......................(2)

Multiply equation (1) by 3 and equation (2) by 2, then we have

18x+6y=258.......................(1)\\\\20x+6y=278...........................(2)

Subtract equation (1) from equation (2), we have

2x=20\\\\\Rightarrow\ x=10

Substitute the value of x in equation (1), we get

60+2y=86\\\\\Rightarrow\ 2y=26\\\\\Rightarrow\ y=13

Hence, the cost of child's ticket = $10

The cost of adult ticket = $ 13

4 0
2 years ago
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