Use (pemdas) what is 3 x 7 - 25 / 5 write 3 steps

Mathematics

2 answers:

Reil [10]2 years ago

3 0

Answer:

Step-by-step explanation:

step 1: 3 x 7 = 21

so you're left with this 21-25/5

step 2: 25/5=5

left with 21-5

step 3: 21-5=16

16 should be the right answer, sorry if i'm wrong

sergiy2304 [10]2 years ago

3 0

Answer:

Step-by-step explanation: have a nice day

= 3*7-25/5

= 21-25/5

= 21-5

= 16

parentheses, exponents, multiplication, division, addition, and subtraction.

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Jin tried to evaluate 5 + 2 x 9 step-by-step.

Zigmanuir [339]

Answer:

5 + 2 x 9

Step 1 = 7 x 9

Step 2 = 63

Step-by-step explanation:

= 5 + 2 x 9

= 5 + ( 2 x 9 )

= 5 + 18

= 23

Step 2 = 7 x 9

= 63

Step 3 = 63

C. jin did not make a mistake

Sorry i'm wrong :)

4 0

3 years ago

Evaluate each expression 10 (e+7) E=3

Nostrana [21]

Plug in e for 3.

10(3+7)

Use the distributive property. a(b+c)= ab+ac

10*3= 30, 10*7=70

30+70=100

The expression equals 100.

I hope this helps!
~kaikers

5 0

3 years ago

Read 2 more answers

Solve the equation without the use of a calculator. please Help!!! Thank you!!! 12x^3-30x=5-2x^2

nata0808 [166]

So, since we have a cubic equation with 4 terms, the first thing we should try is factoring by grouping, so:

$12x^3+2x^2-30x+5 =0 \implies \\ 2x^2(6x+1)-5(6x+1)=0 \implies \\ (2x^2-5)(6x+1) = 0$

Now that we've factored our equation, we can use ZPP and break it up:

$2x^2-5 = 0 \implies \\ 2x^2=5 \implies\\ x^2=\frac{5}{2} \implies\\ x=\pm\frac{\sqrt{5}}{\sqrt{2}}=\pm\frac{\sqrt{10}}{2} \\ \\ 6x+1 =0 \implies \\ 6x=-1 \implies\\ x=\frac{-1}{6}$