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3 years ago

Can someone simplify these please?

Mathematics

1 answer:

love history [14]3 years ago

7 0

The answers are:
1. 0
2. 12.4
3. -10

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2 years ago

Help me please!! it's due today

Bess [88]

Answer:

the answer would be 14-16=-2

Step-by-step explanation:

first u look where the first long arrow goes on this problem then you follow the second arrow which stops at 6 then u count how much until negative 2. but how I did it is the form 14 how much to 0 which is 14 the I count how many until I get to -2 and there's the answer

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3 years ago

Arnie skated 1 3/4 from home to the lake. He skated 1 1/3 miles around the lake and then skated back home. Write an addition sen

Novosadov [1.4K]

An addition sentence is just addition.

1 3/4 + 1 1/3 + 1 3/4 = ?

7/4 + 7/4 + 4/3

First find the lowest common denominator.

21/12 + 21/12 + 16/12

= 58/12 = 4 10/12 = 4 5/6

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4 years ago

A study of king penguins looked for a relationship between how deep the penguins dive to seek food and how long they stay underw

zepelin [54]

Answer:

(1)0.0138

(2)A. If the depth of the dive is increased by one meter, it adds 0.0138 minutes to the time spent under water.

Nos 3-12: See Explanation

Step-by-step explanation:

Given the regression equation for the relation of dive duration (DD) to depth (D).

$DD = 2.69 + 0.0138D\\$Where: Duration DD is measured in minutes\\epth D is in meters.$

(1)The slope of the regression lie =0.0138

(2)

When D=1, DD = 2.69 + 0.0138(1)=2.7038

When D=2, DD = 2.69 + 0.0138(2)=2.7176

2.7176-2.7038=0.0138

Therefore, If the depth of the dive is increased by one meter, it adds 0.0138 minutes to the time spent under water.

(3) When depth, D =200 meters

DD = 2.69 + 0.0138(200)=5.45 Minutes

(4) When depth, D =210 meters

DD = 2.69 + 0.0138(210)=5.588 Minutes

(5) When depth, D =220 meters

DD = 2.69 + 0.0138(220)=5.726 Minutes

(6) When depth, D =230 meters

DD = 2.69 + 0.0138(230)=5.864 Minutes

(7) When depth, D =240 meters

DD = 2.69 + 0.0138(240)=6.002 Minutes

(8) When depth, D =150 meters

DD = 2.69 + 0.0138(150)=4.76 Minutes

(9) When depth, D =160 meters

DD = 2.69 + 0.0138(160)=4.898 Minutes

(10) When depth, D =170 meters

DD = 2.69 + 0.0138(170)=5.036 Minutes

(11) When depth, D =180 meters

DD = 2.69 + 0.0138(180)=5.174 Minutes

(12) When depth, D =190 meters

DD = 2.69 + 0.0138(190)=5.312 Minutes

7 0

3 years ago