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3 years ago

Do you guys know how to multiply decimals because I can’t I forgot! What’s 87.8 Times 66.4

2 answers:

7 0

5829.92

you multiply it as you would regular numbers and then you count the places that the decimal is in front of. in this case it would be 2 numbers, then in the number you got by multiplying, move the decimal 2 places up

yanalaym [24]3 years ago

5 0

87.8×66.4=5829.92

First u multiply without the points then u count the number of digits with points like in 87.8 there is one digit with point then in 66.4 there is one digit with point so total there is 2digits with point

Then u count from right two digits and put the point .

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attashe74 [19]

$\bf 6.73-2\cdot 5^0\div 2\impliedby \mathbb{PEMDAS}
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5 0

3 years ago

Which theorem or postulate proves that △ABC and △DEF are similar?

Harlamova29_29 [7]

3 sides proportional

3 0

3 years ago

Read 2 more answers

Need help! Does anyone know how to do this type of math? (It's geometry)

mart [117]

Answer:

Step-by-step explanation:

refer the attachment

to solve the question we need to recall one of the most important theorem of circle known as two tangent theorem which states that tangents which meet at the same point are equal that is being said

FA=AI=17
CH=CG=2.5

since $\rm BA=FA+FB$ and it's given that FA and BA are 17 and 29 FB should be

$\rm 29=17+FB$

therefore,

$FB=29-17=\boxed{12}$

once again by two tangent theorem we acquire:

$FB=BH=\boxed{12}$

As BC=BH+CH,BC is

12+2.5
$\boxed{14.5}$

likewise,AD=AI+DI so,

21=17+DI [AD=21(given) and AI=17 (by the theorem)]

thus,

DI=21-17= $\boxed{4}$

By the theorem we obtain:

DI=DG=4

Similarly,DC=DG+CH therefore,

DC=4+2.5= $\boxed{6.5}$

Now finding the Perimeter of ABCD

$P_{\text{ABCD}}=\text{AB+AD+BC+DC}$

substitute what we have and got

$P_{\text{ABCD}}=\text{29+21+14.5+6.5}$

simplify addition:

$P_{\text{ABCD}}=\boxed{71}$

hence,

the Perimeter of ABCD is 71

4 0

2 years ago

Marianne has 5/8 package of peas. She cooks 2/3 of those peas for 5 people. If each person is served an equal amount, what fract

creativ13 [48]

5/8 and 2/3 so...
8 times 3 is 24 so now put your fraction over twenty four
15/24=5/8
15/24 so fifteen out of twenty fourths of the package is what she has. She takes ten out of the fifteenths because fifteen divided by three is five then multiply by two is ten. Then divide by five and you get two.
15/24. 10-> 15/24 cause... 15 divided by 3 ( from the two thirds she cooked) is 5 then * by 2... 5*2=10

5 0

3 years ago

155% of what number is 43.4?

Fed [463]

67.27

155 = 1.55 x 43.4 = 67.27

7 0

3 years ago

Read 2 more answers