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kari74 [83]
3 years ago
11

HELPPPP MEEEEE URGENT DUE IN 1 HOUR!!!!!

Mathematics
1 answer:
wlad13 [49]3 years ago
6 0

Answer:

43 doors

4 hammers

Step-by-step explanation:

3285/75=43.8

75*43=3225

3285-3225=60

60/15=4

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Sé que esta pregunta es muy fácil, pero el español no es mi primer idioma, así que para mí no lo es.
anygoal [31]
A) 749: setecientos cuarenta y nueve , 503: quinientos tres , 421: cuatrocientos veintiuno


B) 400: cuatrocientos , 639: seiscientos treinta y nueve , 401 : cuatrocientos uno


C) 110: ciento diez , 347 : trescientos cuarenta y siete , 003 : cero cero 3 o también puede ser tres


D) 548: quinientos cuarenta y ocho , 312 trescientos doce


E) 2365 : dos mil trescientos sesenta y cinco , o también puede ser , 2: dos , 365: trescientos sesenta y cinco .



El español es mi primera lengua , espero que esto te haya ayudado , tengo una pregunta en mi perfil , si tu idioma es el inglés ayúdame por favor :)
3 0
3 years ago
25 point for this question:
KonstantinChe [14]

Answer:

a=\frac{13}{11}   b =\frac{-2}{11}

Step-by-step explanation:

  • By equating coefficients on both sides of respective terms.

Given,

\frac{x-4}{x^2+7x-18} = \frac{a}{x+9} + \frac{b}{x-2}

<u>Now take  </u><u>lcm</u><u> on right hand side </u>

\frac{x-4}{x^2+7x-18} =\frac{a(x-2)+b(x+9)}{x^2+7x-18}

By equating coefficients of respective terms

x-4 = a(x-2)+b(x+9)

a+b=1  -----1 ; 9b-2a=-4  -----2

Substitute b=1-a in 2

9(1-a)-2a=-4

11a=9+4=13

a=\frac{13}{11}

As b=1-a=1- \frac{13}{11}=\frac{-2}{11}

3 0
3 years ago
Calculate DE to the hundredths place.
kompoz [17]
<h3>Answer:  9.03</h3>

=====================================================

Explanation:

For now, focus solely on triangle HGF.

We'll need to find the measure of angle F.

Use the law of cosines

f^2 = g^2 + h^2 - 2*g*h*cos(F)

(4.25)^2 = 8^2 + 6^2 - 2*8*6*cos(F)

18.0625 = 100 - 96*cos(F)

18.0625-100 = -96*cos(F)

-81.9375 = -96*cos(F)

cos(F) = (-81.9375)/(-96)

cos(F) = 0.853515625

F = arccos(0.853515625)

F = 31.403868 degrees approximately

---------------------------

Now we can move our attention to triangle DEF.

We'll use the angle F we just found to find the length of the opposite side DE, aka side f.

Once again, we use the law of cosines.

f^2 = d^2 + e^2 - 2*d*e*cos(F)

f^2 = (4.75+8)^2 + (11+6)^2 - 2*(4.75+8)*(11+6)*cos(31.403868)

f^2 = 81.563478

f = sqrt(81.563478)

f = 9.031250 approximately

Rounding to two decimal places means we get the final answer of DE = 9.03

5 0
2 years ago
Solve.<br> Х<br> -<br> - 5<br> - 8<br> The solution is x=
amm1812
It should be 20 I did it on my test
3 0
3 years ago
Read 2 more answers
Simplify completely the quantity 10 times x to the 6th power times y to the third power plus 20 times x to the third power times
KIM [24]
\dfrac{10x^6y^3+ 20x^3y^2}{5x^3y}

=  \dfrac{10x^3y^2(x^3y + 2)}{5x^3y}

= 2y(x^3y + 2)
8 0
3 years ago
Read 2 more answers
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