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2 years ago

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

Mathematics

2 answers:

Nadusha1986 [10]2 years ago

6 0

Answer:

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:

..................

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