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Helen [10]
4 years ago
10

The library at school is organized by fiction and nonfiction books. There are 3 nonfiction books for every 7 fiction books. How

many total books are there if the library has 240 nonfiction books?
Mathematics
2 answers:
Andreas93 [3]4 years ago
8 0

Answer:

There are 800 total books.

Step-by-step explanation:

In order to find this, we need to create a proportion that compares the number of non-fiction books to the total. First would be the scale factor and the second would be the total.

3/10 = 240/x

Now we can cross multiply to solve

240*10 = 3 * x

2400 = 3x

800 = x

liubo4ka [24]4 years ago
5 0

There are 800 total books


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A scientest is studying a new super bacteria that is threatening to cause an outbreak. On the first day, there were 5 organisms
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Answer:

C. 125

Step-by-step explanation:

Given:

Bacteria on day 1 = 5

On day 2, each bacteria got split into 5.

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Therefore, the population of bacteria on day 3 is 125.

8 0
3 years ago
Someone help me with this question please
telo118 [61]

Answer:

b = square root of 44 or approx. 6.6

Step-by-step explanation:

6 0
3 years ago
You have an initial amount of $55 in a savings account and you deposit an equal amount into your account each week. After 6 week
bonufazy [111]
Given:
initial deposit = 45
total deposit = 105
w = weekly deposit
x = no. of weeks = 5 weeks
y = amount in dollars
45 + 5w = 105
45 + 5w = 105
5w  = 105 - 45
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y = $45 + $12x  
<span>x = (y - 45)/12

</span>To check:
y = 45 + 12(5)
y = 45 + 60
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I hope this help
8 0
3 years ago
Read 2 more answers
Berechne jeweils die Höhe der Pyramiden!<br>a) V = 140 cm3<br>G = 28 cm2<br>h = ?​
kozerog [31]

Answer:

untere Tabelle gibt an, wie Oberfläche und Volumen der Pyramide berechnet werden. Grundsätzlich gilt:

Oberfläche = Grundfläche + Mantelfläche

Volumen = Grundfläche · Pyramidenhöhe : 3

Generell ist darauf zu achten, dass mit unterschiedlichen Höhenangaben gerechnet wird. Für die Berechnung der Oberfläche wird die Höhe der schrägliegenden Seitendreiecke benötigt (Grafik unten: ha; hb). Für die Berechnung des Volumens wird die Höhe der Pyramide benutzt (Grafik unten: h).

JSXGraph v0.95 Copyright (C) see http://jsxgraph.org

ha = 5.83 cm

h = 5.00 cm

a = 6.00 cm

b = 6.01 cm

hb = 5.83 cm

V = 60.10 cm³

Ap = 106.11 cm²

AM = 70.05 cm²

AG = 36.06 cm²

 –  o  +  ←  ↓  ↑  → 

rechteckige Grundflächequadratische GrundflächeOberfläche = Grundfläche + Mantelfläche

OP = AG + AMOP = a · b + a · ha + b · hbOP = a² + a · ha · 2 Volumen = Grundfläche · h : 3

VP = AG · h : 3

VP = a · b · h : 3VP = a² · h : 3

Step-by-step explanation:

#semogamembantu

5 0
3 years ago
Can someone please help me ?
Nataliya [291]

Answer:

both problems are proportional


8 0
4 years ago
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