3 years ago

Please help urgent!

Mathematics

2 answers:

Margarita [4]3 years ago

7 0

30 percent is the correct answer

bija089 [108]3 years ago

4 0

It would be 30 percents

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A card is drawn from a well shuffled deck of 52 cards. Find the probability that the card is a red card or a 2.

tamaranim1 [39]

$|\Omega|=52$

There are 26 red cards and four 2's. But two 2's are red, so $|A|=26+4-2=28$

$P(A)=\dfrac{28}{52}=\dfrac{7}{13}\approx54\%$

3 0

3 years ago

If anyone could help me with this I'd be very thankful !

Mariana [72]

60% = 0.6 = 3/5
25.5% = 0.255 = 51/200
90% = 0.9 = 9/10
33 1/3 = 0.3333 =
62.5% = 0.625 = 5/8
7.5% = 0.07 = 7/100

6 0

3 years ago

If Log x (1 / 8) = - 3 / 2, then x is equal to. A. - 4 B. 4 C. 1 / 4 D: 0

Softa [21]

$log_{x}(1/8)=-3/2$

This is equal to...

$x^{-3/2}=1/8$

We want "x" so we need to isolate it using laws of exponents...

$x^{(-1)(3/2)}=1/8$

$x^{3/2}=8$ because $x^{-a}=1/x^{a}$

$x=\sqrt[3]{8^{2}}$ because $x^{a/b}=\sqrt[b]{x^{a}}$

x = 4

answer: B

5 0

3 years ago

The tension t in a spring varies directly with the distance d the spring is stretched. If the

yarga [219]

Answer:

t = 21d

Step-by-step explanation:

Here tension and distance are denoted t by d and respectively. Since t varies directly with d , then the relation between t and d is k=td Given that, for the tension 42 pounds, the spring is stretched 2 inches. Substituting t = 42 and d= 2 into t = kd find the value of k . Therefore,

42= K (2)

$K=\frac{42}{2}$

K= 21

Thus the relationship is t = 21d

(Hope this helps can I pls have brainlist (crown)☺️)

7 0

2 years ago

Find the radius of a circle with an area of 27 pie cm

hram777 [196]

Area of a circle is = PI x r^2

Area = 27 PI

This means the radius would be the square root of 27:

√27 = 3√3

The answer is F.

8 0

3 years ago

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