3 years ago

Please please please help

Mathematics

1 answer:

STALIN [3.7K]3 years ago

7 0

Answer:

A. Proportional

B. Nonproportional

C.Nonproportional

D. Proportional

E. Nonproportional

F. Proportional

G. Nonproportional

H. Nonproportional

Step-by-step explanation:

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After making a Deposit puja had $264 in her savings account she noticed that if she added $26 to mount originally in the account

ki77a [65]

Answer:

She had $106.

Step-by-step explanation:

2(x+26)=264

Step 1: Simplify both sides of the equation.

2(x+26)=264

(2)(x)+(2)(26)=264(Distribute)

2x+52=264

Step 2: Subtract 52 from both sides.

2x+52−52=264−52

2x=212

Step 3: Divide both sides by 2.

2x/2=212/2

x=106

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3 years ago

2x+3y=12 and y=x+1.5 in substitution form

Sonbull [250]

Answer:

(1.5, 3)

Step-by-step explanation:

Given the 2 equations

2x + 3y = 12 → (1)

y = x + 1.5 → (2)

Substitute y = x + 1. 5 into (1)

2x + 3(x + 1.5) = 12 ← distribute and simplify left side

2x + 3x + 4.5 = 12

5x + 4.5 = 12 ( subtract 4.5 from both sides )

5x = 7.5 ( divide both sides by 5 )

x = 1.5

Substitute x = 1.5 into (2) for corresponding value of y

y = 1.5 + 1.5 = 3

Solution is (1.5, 3)

4 0

3 years ago

What is the value of X given that the two triangles are similar.

grin007 [14]

Answer:

x = 13

Step-by-step explanation:

ΔRST≈ΔYSZ

therefore:

RT/ST = YZ/SZ

(3x-7)/40 = (2x+2)/35

cross-multiply:

40(2x+2) = 35(3x-7)

80x+80 = 105x-245

80 = 25x-245

325 = 25x

325/25 = x

x = 13

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3 years ago

Talia measured two strings. The green string was 2.37 cm long. The blue string was 4 cm long. How many centimeters longer was th

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The blue is longer by 1.63 cm

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4 years ago

It is known that 10% of the calculators shipped from a particular factory are defective. what is the probability that at least o

seraphim [82]

P = 10% = 0.1
q = 1 - 0.1 = 0.9
P(at least one defective calculator) = P(1) + P(2) + P(3) + P(4) = 1 - P(0)

The brobability of a binomial distribution is given by
$P(x)=^nC_xp^xq^{n-x}$
where: n = 4
$P(0)=^4C_0(0.1)^0(0.9)^4=1\times1\times0.6561=0.6561$
Therefore,
P(at least one defective calculator) = 1 - 0.6561 = 0.3439

6 0

4 years ago