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3 years ago

B - 1 > -17 what does b equal?

Mathematics

1 answer:

Nastasia [14]3 years ago

6 0

Answer:

b > -16

Step-by-step explanation:

The inequality is given as:

b - 1 > -17

To solve this problem, add +1 to both sides of the expression:

b - 1 + 1 > -17 + 1

Now;

b > -16

So, all values for which b is more than -16 satisfy the solution for this problem.

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Which set of odered pairs is not a function?

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Answer:

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Step-by-step explanation:

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The area of a rectangle is 252 cm², and the length is 3 less than 2 times the width. Find the dimensions of the rectangle.

SSSSS [86.1K]

Answer:

21cm, 12cm

Step-by-step explanation:

width=x cm

length=2x-3 cm

area= 252cm²

l*b= 252 cm²

(2x-3)(x)=252

2x²-3x= 252

this is how I did it

we need to find the nearest square of the number (it should be lesser than the area)

that is 225, whose square root is 15.

since there is a coefficient to the x², the value of x would be calculate like this 15- (2+1)= 15-3 = 12

x= 12

we can verify it too,

2*(12)² - 3*12=252

288-36=252

252=252

therefore width is 12 cm and width is 2*12-3= 24-3= 21 cm

verify;

21*12= 252

252=252

hence the dimensions are 12 am (width) and 21 cm(length).

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3 years ago

According to the rate of local telephone call, the minimum charge up to the first 175 calls is Rs. 200. Calculate the total char

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Answer:

the total charge of 145 call with all charge and vat is 181.25

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3 years ago

The label on the car's antifreeze container claims to protect the car between −30°C and 130°C. To convert Celsius temperature to

Sveta_85 [38]

we know that

$C = \frac{5}{9}(F-32)\\ \\F=\frac{9}{5}C+32$

Step $1$

Find the inequality

we know that

$C = \frac{5}{9}(F-32)$ --------> equation $1$

and

$-30\° < C < 130\°$

substitute the equation $1$ in the inequality

$-30\° < \frac{5}{9}(F-32) < 130\°$

Step $2$

Convert $-30\°C$ to F

substitute in the formula

$F=\frac{9}{5}*(-30)+32\\ \\F= -22\°$

Step $3$

Convert $130\°C$ to F

substitute in the formula

$F=\frac{9}{5}*(130)+32\\ \\F= 266\°$

therefore

$-22\° < F < 266\°$

the answer is the option

B. −30 < 5 over 9 (F − 32) < 130; −22 < F < 266

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