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3 years ago

4 2/9 + (16 5/9 - y) = 15 1/9 - 8 7/9 PLEASE FAST

Mathematics

2 answers:

lutik1710 [3]3 years ago

5 0

Answer:

14.444444 but i dont know for sure so wait for someone else to respond

Step-by-step explanation:

Kamila [148]3 years ago

3 0

Answer:

Y=130/9

Step-by-step explanation:

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the class marks of a distribution are 37 42 and 47 the class limits corresponding to class mark 42 are

I am Lyosha [343]

Answer:

$39.5,44.5$

Step-by-step explanation:

$Let\ the\ lower\ limit\ and\ the\ upper\ limit\ of\ the\ first\ interval\ be\ u_1,v_1.\\Let\ the\ lower\ limit\ and\ the\ upper\ limit\ of\ the\ second\ interval\ be\ u_2,v_2.\\Let\ the\ lower\ limit\ and\ the\ upper\ limit\ of\ the\ third\ interval\ be\ u_3,v_3.\\Hence,\\As\ the\ class\ marks\ are\ uniform\ with\ an\ a\ difference\ of\ 5, the\\ observation\ is\ continuous\ and\ the\ class\ size\ is\ 5\ too.\\Hence,\\v_1=u_2, v_2=u_3\\$ $Now,\\Lets\ consider\ the\ first\ two\ classes.\\37=\frac{u_1+v_1}{2} \\42=\frac{u_2+v_2}{2}\\By\ adding\ the\ equations:\\79= \frac{u_1+v_1}{2}+\frac{u_2+v_2}{2}\\79=\frac{u_1+v_1+u_2+v_2}{2}\\79=\frac{(u_1+v_2)+(v_1+u_2)}{2}\\79=\frac{(u_1+v_2)}{2}+\frac{(v_1+u_2)}{2}\\Now,\\As\ the\ mid-point\ between\ two\ points\ can\ be\ calculated\ by\\ its\ average:\frac{u+v}{2} \\Hence,\\u_2\ lies\ in\ the\ mid-point\ of\ u_1\ and\ v_2.\\u_2=\frac{(u_1+v_2)}{2}\\$

$Hence,\\By\ substituting\ u_2=\frac{(u_1+v_2)}{2},\\79=u_2+\frac{v_1+u_2}{2}\\As\ v_1=u_2[Proven],\\79=u_2+ \frac{u_2+u_2}{2}\\79=u_2+\frac{2u_2}{2}\\79=2u_2\\Hence,\\u_2=\frac{79}{2}\\u_2=39.5\\Now,\ as\ we\ already\ know\ that\ the\ class\ size=5,\\v_2-u_2=5\\Hence,\\v_2=5+u_2\\Here,\\v_2=5+39.5\\v_2=44.5\\Hence,\\The\ upper\ limit\ of\ the\ second\ interval=44.5\\The\ lower\ limit\ of\ the\ second\ interval=39.5\\$

7 0

3 years ago

Express the ratio of 3 ft to 18 in lowest terms

seraphim [82]

$1\ ft=12\ in\to3\ ft=3(12\ in)=36\ in\\\\3\ ft:18\ in=36\ in:18\ in=36:18=\dfrac{36}{18}=\dfrac{2}{1}=2:1\\\\Answer:\ \boxed{3\ ft:18\ in=2:1}$

4 0

4 years ago

The movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on your an

Ostrovityanka [42]

Answer:

Step-by-step explanation:

10 cups

2/8=10/x

2x=80

X=40cups

40 cups

2/8=40/x

2x=320

X=160

8 cups

2/8=8/x

2x=64

X=32

5 0

3 years ago

Which expression is equivalent to 15-9(-3x-4)<br> -18x - 24<br> 27x +51<br> 27x - 21<br> 18x + 24

DochEvi [55]

The answer is A!! I hope I helped you

8 0

3 years ago

Two upward forces are acting on a bolt. One force of 60.5lb acts at an angle of 82.4 above the horizontal and the other force of

Lera25 [3.4K]

Answer:

Fv = 79.63 lb

The total upward force Fv is 79.63 lb

Step-by-step explanation:

We need to determine the total upward force, the y component of force;

Given;

Force F1 = 60.5 lb, 82.4° above horizontal

Force F2 = 37.2 lb, (82.4-50.5)° above horizontal

The vertical component of Force F1 and F2 is;

Fv = 60.5sin(82.4) + 37.2sin(82.4-50.5)

Fv = 79.63 lb

The total upward force Fv is 79.63 lb

6 0

3 years ago