4 years ago

Estimate the number 3,744

Mathematics

1 answer:

alina1380 [7]4 years ago

6 0

4000(to nearest 1000).

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A spinner is divided into four colored sections that are not of equal size: red, blue, purple, and orange. The arrow on the spin

abruzzese [7]

Answer:

1 out of 4

Step-by-step explanation:

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3 years ago

Determina la suma de las siguientes progresiones los primeros 18 términos de la progresión aritmética: an = -{4, 12, 20, 28, 36,

Anuta_ua [19.1K]

Hello,
let
t=(-4)+(-12)+(-20)+(-28)+(-36)+....=-(4+12+20+28+36+...)=-s

$a_{1}=4=-4+1*8$
$a_{2}=12=-4+2*8$
$a_{3}=20=-4+3*8$
$a_{4}=28=-4+4*8$

...
$a_{18}=?=-4+18*8=140$

$a_{i}=-4+i*8$

$s=\sum_{i=1}^{18} (-4+i*8)=\sum_{i=1}^{18} (-4)+\ 8*\sum_{i=1}^{18}(i)\\\\=(-4)*18+8*(1+2+3+4...+18)\\\\=-72+\frac{(1+18)*18}{2}\\\\=-72+171=99$

$\boxed{\ t=-99}$

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3 years ago

Niles and Bob sailed at the same time for the same length of time. Niles’ sailboat traveled 56 miles at a speed of 8 mph, while

tekilochka [14]

Niles sailed for 7 hours,because 56:8=7,and Bob the same because 84:12=7

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3 years ago

Look/read the picture

SIZIF [17.4K]

Answer:

6 inches

Step-by-step explanation: