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3 years ago

What is 43x12+3-2=______

Mathematics

2 answers:

Travka [436]3 years ago

7 0

Answer:

517

Step-by-step explanation:

musickatia [10]3 years ago

7 0

Answer:

517

Step-by-step explanation:

43×12+3-2 = 516+3-2

Do the multiplication/division before the addition/subtraction

516+3-2 = 519-2

Work from left to right

519-2 = 517

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In 2013, the population of the state of New York was approximately 19.65 million, and the population of New York City was 8,406,

steposvetlana [31]

Answer:

huhhhhhhhhhh

Step-by-step explanation:

3 0

3 years ago

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Terry and Callie do word processing. For a certain prospectus Callie can prepare it two hours faster than Terry can. If they wor

Dahasolnce [82]

Time taken by jerry alone is 10.1 hours

Time taken by callie alone is 8.1 hours

Solution:

Given:- For a certain prospectus Callie can prepare it two hours faster than Terry can

Let the time taken by Terry be "a" hours

So, the time taken by Callie will be (a-2) hours

Hence, the efficiency of Callie and Terry per hour is $\frac{1}{a-2} \text { and } \frac{1}{a} \text { respectively }$

If they work together they can do the entire prospectus in five hours

$\text {So, } \frac{1}{a-2}+\frac{1}{a}=\frac{1}{5}$

On cross-multiplication we get,

$\frac{a+(a-2)}{(a-2) \times a}=\frac{1}{5}$

$\frac{2 a-2}{(a-2) \times a}=\frac{1}{5}$

On cross multiplication ,we get

$\begin{array}{l}{5 \times(2 a-2)=a \times(a-2)} \\\\ {10 a-10=a^{2}-2 a} \\\\ {a^{2}-2 a-10 a+10=0} \\\\ {a^{2}-12 a+10=0}\end{array}$

using quadratic formula:-

$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

$x=\frac{12 \pm \sqrt{144-40}}{2}$

$\begin{array}{l}{x=\frac{12 \pm \sqrt{144-40}}{2}} \\\\ {x=\frac{12 \pm \sqrt{104}}{2}} \\\\ {x=\frac{12 \pm 2 \sqrt{26}}{2}} \\\\ {x=6 \pm \sqrt{26}=6 \pm 5.1} \\\\ {x=10.1 \text { or } x=0.9}\end{array}$

If we take a = 0.9, then while calculating time taken by callie = a - 2 we will end up in negative value

Let us take a = 10.1

So time taken by jerry alone = a = 10.1 hours

Time taken by callie alone = a - 2 = 10.1 - 2 = 8.1 hours

3 0

3 years ago

A car can average 140 miles on 5 gallons of gasoline. Write any equation for the distance d in miles the car can travel on g gal

ser-zykov [4K]

d=28g I might be wrong, but we can find this by dividing 140 by five, which equals 28.

7 0

3 years ago

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What is the answer

Igoryamba

Answer:

∠B = 60°

Step-by-step explanation:

They are supplementary angles, which means they add up to 180°.

∠B + ∠A = 180

? + 120 = 180

? = 180 - 120

? = 60°

8 0

3 years ago

For the polynomial below, 2 is a zero. Express f(x) as a product of linear factors .

dolphi86 [110]

F(x)=x³+4x²-5x+14
to express as linear product we proceed as follows:
f(x)=x³+4x²-5x+14
f(x)=x(x²+4x-5)+14
f(x)=x(x-1)(x+5)+14

Answer: f(x)=x(x-1)(x+5)+14

5 0

3 years ago

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