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weqwewe [10]
3 years ago
9

Hector found twice as many seashells as

Mathematics
1 answer:
MissTica3 years ago
4 0
Hector = 2s or h/2
Sister = s


Equation: h/2 = s

Substitution: (20)/2 = s

10 = s


Hector’s sister found 10 seashells.
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5. A function is given below.<br> f(x) = 3x2 - x + 6<br> What is f(2)?<br> 2
goldenfox [79]

Answer:   10

Step-by-step explanation:

f(x)= 3 (2) - x + 6

f(x)= 6 - 2 + 6

f(x)=  4 + 6

f(x) = 10

7 0
3 years ago
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Fill in the missing value in each equation:<br>a)0.25+_____=0<br>b)-5×_____=-5<br>c)_____×-6=0
Mashutka [201]

Answer:

a) -0.25

b) 1

c)0

Step-by-step explanation:

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2 years ago
Analyze the diagram below and complete the instructions that follow.<br> Find AEB.
aleksandrvk [35]
2x + 50 = 7x
50 = 5x
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5 0
3 years ago
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Elsa buys 27 quarts of punch for a party. Each serving is 8 fluid ounces. If the guests drink 100 servings of punch, how many fl
a_sh-v [17]

Answer:

764 US Fluid Ounce

Step-by-step explanation:

Refrence Sheet Used: https://media.studyisland.com/pics/FL8thgradereferencesheet.html

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4 0
3 years ago
Which sum or difference identity would you use to verify that cos (180° - q) = -cos q?
Phantasy [73]

Answer:

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Step-by-step explanation:

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We have to write which identity we will use to prove the given statement.

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Take left hand side of given expression \cos (180^{\circ}-q)

We know

\cos (a-b)=\cos a \cos b+\sin a \sin b

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Substitute , we get,

\cos (180^{\circ}-q)=\cos 180^{\circ}  \cos (q)+\sin q \sin 180^{\circ}

Also, we know \sin 180^{\circ}=0 and \cos 180^{\circ}=-1

Substitute, we get,

\cos (180^{\circ}-q)=-1\cdot \cos (q)+\sin q \cdot 0

Simplify , we get,

\cos (180^{\circ}-q)=-\cos (q)

Hence, use difference identity to  prove the given result.

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3 years ago
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