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natulia [17]
2 years ago
6

If 8, x, 18 form a geometric sequence , find a value for x

Mathematics
2 answers:
Nadusha1986 [10]2 years ago
6 0

Answer:

13

Step-by-step explanation:

it goes up by 5 every time

katrin [286]2 years ago
4 0

Answer: 13

Step-by-step explanation: It goes up by 5 so 8, 13, 18, 23, and etc

Please tell me if I'm wrong

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Write the missing value above the variable. M-9=7
tia_tia [17]
M=16
16-9=7
hope this helped:)
3 0
3 years ago
Read 2 more answers
I WILL GIVE BRAINLIEST IF YOUR ANSWER IS CORRECT
telo118 [61]

Answer:

1. 4.5 g

2. 56.25 g

Step-by-step explanation:

3 % substance solution means :

3 g of dry substance is present in 100 g of solution.

By unitary method:

The weight of dry substance in 1 g of solution = \frac{3}{100}

The weight of dry substance in 150 g of solution = \frac{3}{100}\times150=4.5\ g

Let the weight of solution be w.

8 % solution contains 8 g dry substance in 100 g.

We have to find the weight of the solution(w) which contains 4.5 g of dry substance.

⇒ \frac{8}{100}\times w=4.5\\w=\frac{450}{8}=56.25\ g.

6 0
3 years ago
Question 5<br> Evaluate:<br> Five cubed.<br> Write the numerical answer only.
NARA [144]

Answer:

125

Step-by-step explanation:

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5 0
2 years ago
Read 2 more answers
Multiply.
tresset_1 [31]
La respuesta correcta es la C
4 0
3 years ago
X^2 + 4y^2 =100; 4y - x^2 = -20
deff fn [24]
x^2+4y^2=100\implies x^2=100-4y^2
\implies 4y-(100-4y^2)=-20
\implies 4y^2+4y-80=0
\implies y^2+y-20=0
\implies (y-4)(y+5)=0
\implies y=4,y=-5

When y=4, you have

4(4)-x^2=-20\implies x^2=36\implies x=\pm6

When y=-5,

4(-5)-x^2=-20\implies x^2=0\implies x=0

So there are three solutions, (x,y)\in\{(6,4),(-6,4),(0,-5)\}.
7 0
2 years ago
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