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kherson [118]
3 years ago
7

What two ways can you find the product of 8x997 using mental math

Mathematics
1 answer:
ss7ja [257]3 years ago
7 0
8=10-2 or
997=1000-3
so we can use distributive property
remember, a(b+c)=ab+ac

for the first one
8(997)=(10-2)(997)=997(10-2)=997(10)+997(-2)=9970-1994=7976

2nd one
8(997)=8(1000-3)=8(1000)+8(-3)=8000-24=7976
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Jeff bought a 5-gallon bucket of paint. He used 1.25 gallons to paint his bedroom, then he used two-thirds of the remaining pain
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3 years ago
Please do 5 and 6!!!!
makkiz [27]
5
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Hope this helps you out
3 0
2 years ago
Read 2 more answers
If triangle DEF has a 90° angle at vertex E, which statements are true? Check all that apply.
Margaret [11]
Draw a diagram (shown below as attachment)

check each option

1st one: obtuse triangle
osbuse means that the triangle has an angle more than 90 degrees
remember that all angles add to 180
90 is one
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2nd: angle at D is acute
acute means less than 90
so we remember that
D+F=90
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this 2nd optin is right

3rd: angle at F is obtuse
wrong, from 1st one,  no obtuse angles
3rd option is wrong

4th: right triangle
duh, a right triangle has a right angle in it
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yes
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5th: D is obtuse
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the right answers are 2nd and 4th or
The angle at vertex D is acute and
Triangle DEF is a right triangle

8 0
3 years ago
Read 2 more answers
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